Cardiological Society of India

Transcription

Calendar of Conferences/CSI Executive Committee
Indian Heart J 2005; 57: 374
Executive Committee (2004-2005)
President
P C Manoria, Bhopal
57th Annual Conference
of
&
15th Asian Pacific
Congress of Cardiology,
Mumbai, India
December 1-4, 2005,
Secretary General
Dr Anil Kumar,
# 122, Bombay Hospital & MRC
12 Marine Lines, Mumbai 400 020
Fax: 022-2203 4660, 2208 0871
e-mail: [email protected]
website: www.15apccand57csi.com
Chairman Scientific Committee
Dr Asok Kumar Kar
Indian Heart House, P-60, CIT Road
Scheme VIIM, Kankurgachi,
Kolkata 700 054
Fax: 033-2355 6308
e-mail: [email protected]
Website: www.15apccand57csi.com
President Elect
A K Kar, Kolkata
Honorary Editor
V K Bahl, New Delhi
Vice Presidents
Amal Kumar Banerjee, Kolkata
J C Mohan, New Delhi
Kajal Ganguly, Kolkata
Honorary General Secretary
P S Banerjee, Kolkata
Treasurer
S S Chatterjee, Kolkata
Honorary Joint Secretary
Sharad Kumar Parashar, Jahandirabad
Soumitra Kumar, Kolkata
Members
Vidhut Kumar Jain, Indore
S K Parashar, New Delhi
K Venugopal, Calicut
Shirish Hiremath, Pune
A K Khan, Kolkata
P K Deb, Kolkata
H K Chopra, New Delhi
H M Mardikar, Nagpur
Shubhendu Banerjee, Kolkata
Binoda Nand Jha, Muzaffarpur
K Sarat Chandra, Hyderabad
Santanu Guha, Kolkata
S B Gupta, Mumbai
Balram Bhargava, New Delhi
Satyendra Tewari, Lucknow
Dhiman Kahali, Kolkata
Rakesh Gupta, New Delhi
C Lakshmikantan, Chennai
A K Maity, Kolkata
Bikash Kumar Chatterjee, Kolkata
B N Shahi, New Delhi
Immediate Past President
R J Manjuran, Tiruvalla
Cal of Conference.p65
374
11/24/2005, 10:34 AM
INDIAN HEART JOURNAL
Official Publication of the Cardiological Society of India
September–October, 2005
Honorary Editor VK Bahl
Indian Heart Journal
EDITORIAL BOARD
Vol. 57, No. 5
(ISSN 0019-4832)
International
Honorary Editor
VK Bahl
Associate Editor
Anil Bharani
Assistant Editor
SS Kothari
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S Mishra
G Sharma
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[email protected]
Publisher
Professor VK Bahl
On behalf of
The Cardiological
Society of India
Printed by
Thomson Press (I) Ltd.,
Faridabad
Registration No.
RN 2857/57
Editorial Board.p65
Masood Akhtar, Milwaukee
Inder S Anand, Minneapolis
Hasina Banoo, Dhaka
Kanu Chatterjee, California
Jay N Cohn, Minneapolis
Alain Cribier, Rouen
Prakash C Deedwania, San Francisco
Enas A Enas, Illinois
Hemal Fernando, Colombo
Martin B Leon, New York
JL Mehta, Arkansas
Charanjit S Rihal, Minnesota
Gary S Roubin, New York
C Stefanadis, Athens
Samin K Sharma, New York
PW Serruys, Rotterdam
PK Shah, California
Jasbir Sra, Milwaukee
Pavlos K Toutouzas, Athens
Michael J Tynan, London
JL Wilkinson, Victoria
Salim Yusuf, Ontario
National
AK Banerjee, Kolkata
PS Banerjee, Kolkata
SS Chatterjee, Kolkata
AL Dutta, Kolkata
MK Das, Kolkata
DS Gambhir, New Delhi
MR Girinath, Chennai
U Kaul, New Delhi
Anil Kumar, Mumbai
RJ Manjuran, Tiruvalla
AK Maity, Kolkata
SC Manchanda, New Delhi
PC Manoria, Bhopal
M Panja, Kolkata
S Padmavati, New Delhi
SK Parashar, New Delhi
BS Raju, Hyderabad
N Trehan, New Delhi
KK Talwar, New Delhi
P Venugopal, New Delhi
EDITORIAL ADVISORS
Editorial Policy
M Khalilullah, New Delhi
KK Sethi, New Delhi
Cor
onar
ventions
Coronar
onaryy Inter
Interventions
Mathew Samuel K, Chennai
Ashok Seth, New Delhi
Cor
onar
Coronar
onaryy Hear
Heartt Disease
PC Rath, Hyderabad
I Sathyamurthy, Chennai
Noncor
onar
ventions
Noncoronar
onaryy Inter
Interventions
Satyavan Sharma, Mumbai
AK Kar, Kolkata
Cardiomyopathy
Satyendra Tewari, Lucknow
Santanu Guha, Kolkata
Experimental Cardiology
Nakul Sinha, Lucknow
Vidhut K Jain, Indore
Epidemiology
KS Reddy, New Delhi
VK Puri, Lucknow
Electr
ocar
diography
Electrocar
ocardiography
D Kahali , Kolkata
Praveen Jain, Jhansi
Electr
ophysiology
Electrophysiology
TS Kler, New Delhi
Yash Lokhandwala, Mumbai
Echocardiography
JC Mohan, New Delhi
Rakesh Gupta, New Delhi
Cardiac Pathology
S Jalal, Srinagar
RB Panwar, Bikaner
Cardiac Pharmacology
PK Deb, Kolkata
CN Manjunath, Bangalore
Rheumatic Heart Disease
HN Mishra, Cuttack
MS Gupta, Rohtak
Cardiac Rehabilitation
DN Grover, New Delhi
SB Gupta, Mumbai
Cardiac Radiology
PK Goel, Lucknow
Kajal Ganguly, Kolkata
Hemodynamics
R Tandon, New Delhi
B Bhargava, New Delhi
Cardiac Biochemistry
JM Tharakan, Thiruvananthapuram
RPS Bharadwaj, Kanpur
Hypertension
M Paul Anand, Mumbai
BN Shahi, New Delhi
Tropical Car
diology
Cardiology
HK Chopra, New Delhi
BK Chatterjee, Kolkata
Nuclear Cardiology
Arun Malhotra, New Delhi
GN Mahapatra, Mumbai
Instrumentation
Lekha Pathak, Mumbai
HM Mardikar, Nagpur
Pediatric Cardiology
S Shrivastava, New Delhi
A Saxena, New Delhi
Pediatric Interventions
R Krishna Kumar, Kochi
Bharat Dalvi, Mumbai
Cardiac Pacing
R Bajaj, New Delhi
A Gupta, Ahmedabad
Biostatistics
A Grover, Chandigarh
AK Khan, Kolkata
Car
diac Anesthesia
Cardiac
DK Tempe, New Delhi
Yatin Mehta, New Delhi
Invasive Cardiology
S Hiremath, Pune
K Sarat Chandra, Hyderabad
Noninvasive Cardiology
Jacob Jose, Vellore
K Venugopal, Calicut
Peripheral V
ascular Disease
Vascular
S Tyagi, New Delhi
George Joseph, Vellore
Cardiac Metabolism
RK Madhok, Jaipur
BN Jha, Muzaffarpur
Cardiac Surgery
OP Yadava, New Delhi
G Mani, New Delhi
Geriatric Cardiology
AK Thakur, Patna
S Banerjea, Kolkata
Visit: www.indianheartjournal.com
379
11/24/2005, 10:36 AM
Abstracts
Indian Heart J 2005; 57: 381–425
Prevalence of Metabolic Syndrome in
Coronary Artery Disease
1
Jyotirmoy Pal, N Sarkar, JD Mukherjee, A Talukdar,
PS Karmakar, M Chatterjee, K Nanda
Institute of Post Graduate Medical Education and Research and SSKM
Medical College, Kolkata
Incidence of coronary artery disease (CAD) is increasing
in Asian countries; 15%–16% of global mortality due to CAD
is contributed by India. Traditional risk factors such as age,
sex, dyslipidemia, diabetes mellitus (DM) and hypertension
(HTN) cannot explain such high incidence of vascular
atherosclerosis. So the world today is in search of new risk
factors. Metabolic syndrome/insulin resistance syndrome (IRS)
may be one of them. To observe the incidence of metabolic
syndrome in CAD patients, we conducted this study on 60
patients of CAD and 38 controls. Each patient under study had
undergone anthropometric measurements, fasting blood sugar
(FBS), fasting insulin and lipid profile estimation. Insulin
resistance was estimated by HOMA model. Study revealed that
incidence of each component of the IRS in cases is much
higher than control (32% v. 8.5%). There is also definite ruralurban difference (32% v. 19%). Same is true for higher socioeconomic group (33% v. 23%). Prevalence of each component
of IRS is higher in CAD patients particularly in urban and
upper class population. This explains why urban upper class
people suffer from more complications of atherovascular
diseases. Clustering of components (DM, HTN, dyslipidemia)
increases the incidence of insulin resistance which may cause
the pro-inflammatory state of vessel wall. Possibly IRS causes
common soil for development of both DM and CAD. So, future
target for primary and secondary prevention of CAD and its
complications should be to control insulin resistance state
apart from controlling HTN, DM and dyslipidemia.
either normal (BMI<25 kg/m2) or overweight/obese (BMI>25
kg/m2). The patients were classified into upper, middle and
lower socio-economic classes based upon modified
Kuppuswami index which includes education, profession, and
income of the patient. The mean low-density lipoprotein (LDL)
levels were 97.3±17.2 mg/dl, 104±18.1 mg/dl and 94±15.9
mg/dl. Mean triglyceride (TG) levels were 166.1±24.5 mg/dl,
158.5±24.1 mg/dl and 133.8±19.0 mg/dl in upper, middle
and lower socio-economic class, respectively. LDL levels were
not significantly different between the three socio-economic
classes; however, TG levels were significantly higher in upper
socio-economic class as compared to the lower socio-economic
class (p<0.05). Overall, 25% patients were overweight/obese
and the prevalence of such patients in upper, middle and lower
socio-economic class was 18.1%, 32% and 18.2%, respectively.
LDL levels in patients with normal BMI versus overweight/obese
patients were 94.1±15.7 mg/dl and 104±16.3 mg/dl,
respectively (p=0.1) while TG levels were significantly higher
in overweight/obese patients compared to patients with
normal BMI (198±22.4 mg/dl v. 144±20.1 mg/dl, p=0.001).
On the basis of our data, LDL levels did not correlate with
either the socio-economic class or the BMI in patients with
CAD. However, TG levels were significantly higher in patients
of upper socio-economic class as compared to lower socioeconomic class and also significantly higher in obese or
overweight patients as compared to patients with normal BMI.
It was also noted that the prevalence of overweight and obesity
was significantly higher in middle socio-economic class as
compared to both upper and lower socio-economic classes.
Comprehensive Lipid Tetrad Index and
Lipoprotein(a) as a Marker for Coronary
Artery Disease
Correlation between Socio-Economic Class,
Body Mass Index and Lipid Levels in Indian
Patients with Coronary Artery Disease
2
R Sethi, A Puri, K Behal, N Gupta, A Jain, A Singhal, A Ahuja,
S Mukerjee, SK Dwivedi, VS Narain, RK Saran, VK Puri
King George Medical University, Lucknow
Traditionally it is believed that coronary artery disease
(CAD) and dyslipidemia are more prevalent in affluent
societies. However, epidemiology of CAD has many
confounding factors in Indian context. So the present study
was undertaken to ascertain the correlation between socioeconomic class, body mass index (BMI) and lipid levels in
Indian patients presenting to a tertiary care hospital with acute
coronary syndrome (ACS). A total of 414 patients admitted
with ACS were screened for their baseline lipid levels (within
24 hours of their symptom onset), BMI and socio-economic
class. Based upon their BMI, the patients were divided into
A.p65
381
3
Ramanand P Sinha, Satyendra Tewari, Sudeep Kumar,
Aditya Kapoor, Naveen Garg, PK Goel, Nakul Sinha
Sanjay Gandhi Post Graduate Institute of Medical Sciences,
Lucknow
The comprehensive lipid tetrad index reflects the total
burden of dyslipidemias and magnifies the subtle abnormality
of individual lipids. Lipoprotein(a) [Lp(a)] levels are related to
both atherogenesis and thrombogenesis and may be a key link
between lipid and coronary artery disease (CAD). Elevated
Lp(a) leads to CAD with more prematurity and severity. We
studied 285 randomly selected patients hospitalized for
coronary angiogram during January 2001 to December 2004.
There were 206 angiographically proven CAD patients with a
mean age of 54.8±9.4 years (range: 34-73 years) (male: 137,
females: 69) and 154 subjects with normal coronaries with a
mean age of 55.2±8.3 years (range: 34-72 years) (male: 104,
female: 50). In study group overall 41.2% patients had Lp(a)
>30 mg/dl. Of the patients who had CAD, 54.5% had Lp(a)
11/24/2005, 10:45 AM
Indian Heart J 2005; 57: 381–425
382 Coronary Heart Disease
>30 mg/dl while in normal coronay patients only 24.8% had
Lp(a) >30 mg/dl. Mean Lp(a) is significantly higher in CAD
patients (35.7±23.8 mg/dl) than in non-CAD patients
(18.7±20.6 mg/dl). Mean combined lipid tetrad index in CAD
patients was 23278±14573 and 9326±14125 in patients
with normal coronaries (p<0.001). Mean Lp(a) level of
patients with triple vessel, double vessel and single vessel
disease was 39.9, 34.2 and 32.2 mg/dl, respectively (p=0.05)
while patients with normal coronaries had mean Lp(a) of 16.8
mg/dl. We conclude that Lp(a) level is well correlated with CAD
and is a powerful independent risk factor for atherosclerosis
and comprehensive lipid tetrad index providing better
explanation for severity and extent of CAD.
Is Homocysteine a “Premature” Marker of
Proven Coronary Artery Disease in Indian
Patients
4
Umesh Agrawal, Aditya Kapoor, Sudeep Kumar,
Satyendra Tewari, Naveen Garg, PK Goel, Nakul Sinha
Clinical and Anthropometric Correlation of
Normal Coronary Artery Dimensions
5
C Elangovan, V Jaganathan, R Alagesan, M Annamalai,
S Shanmugasundaram, Geetha Subramaniyam,
A Balaguru, G Gnanavelu, S Venkatesan, G Karthikeyan,
G Justin Paul, C Moorthy
Madras Medical College and Government General Hospital, Chennai
Diameter of coronary artery is an important predictor of
outcome after coronary artery bypass graft (CABG) surgery
and percutaneous coronary intervention (PCI). Only limited
literature is available about coronary artey dimensions in
Indian population. In this study we correlated coronary
dimensions with clinical and anthropometric data in our
population. Normal coronary angiograms identified as to have
smooth lumen free of atheroma of 75 patients (male: 51,
female: 24) aged between 20 to 64 years (mean: 45 years)
were analyzed by quantitative coronary angiography.
Diameters were measured at defined segments in diastole.
Patients of various etiology including post-infarct recanalized
arteries, valvular heart disease – pre-operative evaluation,
chest pain evaluation, dilated cardiomyopathy (DCM) and
others were analyzed. Correlations were made with various
anthropometric measurements, etiology, left ventricular (LV)
mass by echocardiography, age, sex, and risk factors.
Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow
We studied the clinical profile and homocysteine level in
angiographically proven coronary artery disease (CAD) in 128
patients with a mean age of 56.4±9.1 years (116 males, 12
females). There were 36 (28%) diabetic, 46 (36%) hypertensive,
30 (23%) smoker and 16 (13%), with a positive family history
of CAD. The mean triglyceride, total cholesterol, high-density
lipoprotein (HDL), low-density lipoprotein (LDL) and very lowdensity lipoprotein (VLDL) values were 149±63, 156±30,
34±14, 92±22 and 31±17 mg/dl respectively. Clinical
presentation of these patients were stable angina in 41 (32%),
unstable angina in 22 (23 %) and myocardial infarction (MI)
in 58 (45%). Coronary angiogram was done in all and it
showed single vessel disease (SVD) in 45 (35%), double vessel
disease in (DVD) 41 (32%), and triple vessel disease (TVD) in
42 (33%). The mean homocysteine level of the study group
was 23.5±15.2 µmol/L. Number of patients in group having
homocysteine <15, 15 to <30 and ≥30 µmol/L were 40, 67
and 21, respectively. The mean homocysteine level in stable
angina patients was 16.8±7.6 µmol/L, unstable angina
patients was 20.9±12.0 µmol/L and in MI patients it was
26.8±18.4 µmol/L. Homocysteine levels were higher in
patients who presented with acute coronary syndrome
suggestive of unstable plaque in comparison to those who had
stable angina. The mean homocysteine level of SVD was
19.4±9.5 µmol/L, DVD was 20.8±21.1 µmol/L, and TVD was
28.5±20.8 µmol/L. TVD patients had higher homocysteine
level in comparison to DVD and SVD patients. We conclude
that patients with higher homocysteine levels present more
with acute coronary syndrome and with more diffuse CAD.
A.p65
382
Territory
LMCA
LAD-P
LAD-M
LAD-D
LCx-P
ND
LCx-P
DO
LCx-D
ND
Diameter
DIA/BSA
4.71
2.88
3.64
2.20
3.08
1.88
2.4
1.46
3.14
1.92
3.91
2.39
2.14
1.31
Territory
LCx-DDO
RCA-P
DO
RCA-P
ND
RCA
D-DO
RCAD-ND
OM
PDA
Diameter
DIA/BSA
2.59
1.59
3.18
2.01
3
1.84
2.69
1.64
2.11
1.29
2.22
1.36
1.98
1.21
Male
Female
LV mass
<150 gm
150-250 gm
>250 gm
LMCA
LAD-P
RCA-P (D)
LCX- P (ND)
4.79
4.55
3.71
3.45
3.54
3.14
3.23
3.09
4.3
4.65
5.36
3.15
3.68
4.73
3.06
3.2
3.49
2.82
2.92
3.35
LMCA: left main coronary artery; LAD: left anterior descending artery; P: proximal;
M: mid; D: distal; LCx: left circumflex; ND: non-dominant; DO: dominant; DIA/BSA:
diameter/body surface area. All values are mean in mm
Coronary artery dimensions were positively correlated with
left ventricular (LV) mass, body surface area (BSA), body mass
index (BMI). Females had significantly smaller dimensions
compared to males even after correction for lower BSA. Patients
with severe aortic valve disease had significantly larger left
coronary system and those with severe mitral stenosis had
larger right coronary system reflecting respective chamber
hypertrophy. No correlations were present between coronary
dimensions and age, waist/hip ratio, diabetes and systemic
hypertension.
11/24/2005, 10:45 AM
Indian Heart J 2005; 57: 381–425
Coronary Heart Disease 383
Prevalence of Conventional Cardiovascular
Risk Factors in Patients with Coronary Artery 6
Disease in India - Current Status: Results from
1000 Consecutive CABG Patients
RR Kasliwal, A Kulshreshtha, S Agrawal, M Bansal,
N Trehan
Escorts Heart Institute and Research Centre, New Delhi
Over the last few decades, incidence and prevalence of
coronary artery disease (CAD) in India have increased
significantly. Changing lifestyle due to rapid urbanization and
epidemiologic shift has been the major reason. The lifestyle
changes are assumed to have resulted in altered prevalence of
obesity, diabetes, hypertension, dyslipidemia and other
cardiovascular risk factors (CVRFs) though the current status
is not known. We enrolled 1000 consecutive patients who were
undergoing coronary artery bypass surgery (CABG) at our
centre between June 2004 and September 2004. Clinical
examination (including detailed history) and lab investigations
(fasting and 2-hour post-prandial blood sugar, fasting lipid
profile) were done to ascertain prevalence of various
conventional CVRFs. Mean age of the patients was 59.73±9.5
years; 88.4% patients were males. Hypertension was present
in 70.9% and diabetes in 47.5%; 9.2% patients were current
smokers and 30.4% patients had history of smoking in recent
past. Low-density lipoprotein (LDL) cholesterol >130 mg/dl
was seen in 6.2% patients, high-density lipoprotein (HDL) <40
mg/dl in 69% and triglycerides ≥150 mg/dl in 37% patients.
At least one of these lipid abnormalities was seen in 59.3%;
19.9% patients had family history of premature CAD (parents
9.4%, sibling 14.6%) but 54.5% patients had at least one firstdegree relative having CAD. Only 4.4% patients were free of
all five major CVRFs (i.e. hypertension, diabetes, smoking,
dyslipidemia and family history of premature CAD), 16.2%
patients had one CVRF, 32.4% had two, 33.6% had three and
11.6% patients had four CVRFs; 1.8 % patients had all the five
major CVRFs. The present study reveals a very high prevalence
of most of the conventional CVRFs particularly diabetes
mellitus in patients undergoing CABG. The fact that 95.6%
patients had at least one major CVRF underscores continued
importance of these risk factors in cardiovascular risk
assessment and absence of all these CVRFs in a person can be
used as a marker of very low likelihood of having CAD.
High Sensitive C-Reactive Protein :
A Prognostic Marker in Acute Coronary
Syndrome
7
CK Mishra, A Mishra, SN Routray, D Das, HN Mishra,
M Behera
SCB Medical College, Cuttack
This study compared the strength of correlation between
high-sensitive C-reactive protein (hsCRP) within 6 hours of
onset of acute coronary syndrome (ACS) and in-hospital
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383
mortality and morbidity. Our study group comprised of 80
patients (60 males, 20 females) with mean age of 54.5 years.
Fifty (62.5%) patients had acute myocardial infarction (MI),
18 (22.5%) had non-Q MI and 12 (15%) had unstable angina.
Left ventricular (LV) function was assessed by two-dimensional
echocardiography (2D echo) and hsCRP was measured by
turbidometry. Severe LV dysfunction [ejection fraction (EF)
<30%] was present in 30% of patients with high hs CRP
(>0.31 mg/dl), none in patients with low hsCRP (<0.31 mg/
dl) (p=0.001). Positive correlation was seen in acute MI
patients between hsCRP and regional wall motion abnormality
(RWMA) (p=0.0001). No correlation was seen between hsCRP
and RWMA (p=0.53), left ventricular ejection fraction (LVEF)
(p=0.350) in unstable angina patients. High hsCRP levels were
noted in patients who had cardiac rupture [(1.6%)] and those
who died (n=8, 10%) (mean value was 2.12±0.2 mg/dl) and
left ventricular function (LVF) [n=16 (20%)]. To conclude,
elevated hsCRP early after acute MI (<6 hours) signifies
underlying increased inflammation and hence, more extensive
damage and complications. Hence elevated hsCRP
prognosticates poor LV function and in-hospital adverse
cardiac outcome in ACS.
Use of Streptokinase in Management of
Acute Myocardial Infarction - An Experience
in District-Level Hospital of Bangladesh
8
Triptish Chandra Ghose, Tawfiqul Islam, Md Tariqul Matin
CD Path and Hospital, Comilla, Bangladesh
The objective of this study was to assess the safety of
thrombolytic therapy with streptokinase in patients with acute
myocardial infarction (MI) in a district-level hospital of
Bangladesh where ICU or monitoring facility is not available.
It was a retrospective review of 200 cases of acute MI treated
with streptokinase along with other adjunctive therapy within
6 hours of onset of symptoms in our hospital from January to
December 2003. Total period of stay in hospital was 5 to 10
days. Out of these 200 patients, 180 were suffering from acute
ST elevation MI and 20 patients presented with left bundle
branch block (LBBB), with no contrandication to thrombolysis.
Among them, 80% patients were men with the mean age of
62 years. From the history and investigations it was revealed
that 55% patients were suffering from hypertension, 46% were
diabetics, 42% had dyslipidemia and 62% patients were
smoker. After analysis it was revealed that one (0.5%) patient
died from intracerebral hemorrhage, 2% patients developed
minor hemorrhagic complication, 2.5% patients had
arrhythmias and 6% patients had developed hypotension and
rest of the 89% patients did not develop any significant
complication. With these results, it can be concluded that use
of streptokinase in treatment of acute MI specially within 6
hours of onset of symptoms, is relatively safe and showed
greater clinical benefit in district-level hospital where neither
primary percutaneous coronary intervention (PCI) nor even
11/24/2005, 10:45 AM
Indian Heart J 2005; 57: 381–425
CCU facility is available. It is also quite cost-effective in our
socio-economic context.
Significance of ST Segment Elevation in lead
aVR during Treadmill Testing and
Angiographic Correlation
9
V Mubarack, Syam Kumar, SV Praveen, Vinaya Kumar,
Sunitha Viswanathan, K Venugopal
Medical College, Calicut
Significance of ST segment elevation in lead aVR in acute
coronory syndrome is well known. But the significance of ST
segment elevation in lead aVR during exercise treadmill test
(TMT) in patients with coronary artery disease (CAD) is not
well studied. The aim of the study was to see whether ST
segment elevation in lead aVR during TMT in patients with
CAD has any localizing value and also to study its correlation
with coronary angiogram. Out of a total of 800 consecutive
patients who underwent TMT for known or suspected CAD,
500 patients with positive TMT were randomly selected. They
were divided into two groups. Group 1consisted of patients
with ST segment elevation in lead aVR and Group 2 patients
were those without ST segment elevation in lead aVR. Their
baseline clinical characteristics, TMT, and angiographic profile
were compared. Patients with positive TMT with ST elevation
in lead aVR had more involvement of left system than those
without ST elevation. Left main coronary artery (LMCA)
involvement was equal in both groups. Those with ST elevation
had significantly more involvement of proximal left anterior
descending artery (LAD) than those without.There was no
significant difference with regard to involvement of right
coronary artery (RCA) or left circumflex (LCx). In patients with
positive TMT with ST segment elevation in lead aVR there is
some localizing value. There is statistically significant
involvement of proximal LAD in these patients.
Metabolic Syndrome in Patients with
Angiographically Proven Coronary Artery
Disease
10
Sudeep Kumar, Ramanand P Sinha, Satyendra Tewari,
We analyzed our data of 2491 patients of coronary artery
disease (CAD), who underwent angiography, and found that
276 (11.1%) patients were having metabolic syndrome defined
as low serum high-density lipoprotein (HDL) cholesterol < 40
mg/dl and 50 mg/dl for males and females, respectively, central
obesity or body mass index (BMI) ≥30 kg/m2, fasting glucose
≥ 110 mg/dl and serum triglyceride ≥150 mg/dl. Patients with
metabolic syndrome were older, had lower level of HDLcholesterol and higher levels of serum tiglyceride (58.7±8.4
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384
years v. 53.4±10.8 years, p=0.0001; 29.6±5.8 mg/dl v.
31.4±9.7 mg/dl, p=0.001; and 231.7±89.0 mg/dl v.
191.6±94.8 mg/dl, p=0.0001, respectively). Incidence of
smoking was less in this group (23.4% v. 38.5%; p=0.0001).
Incidences of stable angina, unstable angina, old myocardial
infarction (MI) or acute coronary syndrome (ACS) were same
as in patients without metabolic syndrome. On angiography,
patients with metabolic syndrome had more chances of having
triple vessel disease and less chances of single vessel disease
(37.6% v. 25.2%; p= 0.0001 and 33.9% v. 47.3%; p= 0.002,
respectively). We conclude that metabolic syndrome is not
uncommon in Indian patients of CAD. Though in our study,
clinical features of patients with metabolic syndrome were
similar as compared to those without metabolic syndrome,
incidence of triple vessel disease and lipid abnormalities were
higher.
Ventricular Septal Rupture following Acute
Myocardial Infarction
11
GS Gill, Naveen Garg, Sudeep Kumar, Satyendra Tewari,
Aditya Kapoor, PK Goel, Nakul Sinha
Ventricular septal rupture after acute myocardial infarction
(MI) is a rare but well known potentially catastrophic
complication. Mortality without surgery is almost 100%. We
present our experience with post-MI ventricular septal defect
(VSD) at our institute from January 2004 to May 2005. A total
of 9 patients were admitted in to our institute with this
diagnosis – 7 males and 2 females. Mean age was 56±10 years
(range: 41- 66 years). Two (23%) patients were diabetic, 4
(46%) hypertensive and 1 patient was smoker. VSD appeared
on day 3 onward in all patients. None had any history of
angina or MI. Eight (90%) patients had anterior wall MI (2
patients were thrombolyzed) and had apical muscular VSD
(size varying from 8 - 15 mm). One patient had inferior wall
MI and had basal septum VSD. Mean left ventricular ejection
fraction (LVEF) was 38±7%. Coronary angiography performed
in 6 patients revealed single vessel disease in 4 and triple vessel
disease in other 2 patients. Surgical management was
considered in all patients after short initial medical
stabilization. All patients were put on intra-aortic balloon
pump (IABP) support. Two patients could not be stabilized and
died of cardiogenic shock soon after the admission. Out of the
remaining 7 patients, 2 left against the medical advice. Patch
closure of VSD was done in 5 patients. Two patients died after
surgery. One continued to be in cardiogenic shock and died of
multiorgan failure. Another patient improved after surgery
and died later on because of ventricular arrhythmia. To
conclude, septal rupture is more common after anterior wall
MI. Although it is associated with high mortality, its early
recognition, management with IABP support followed by early
surgery can yield better outcome and should be the treatment
of choice.
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Effect of Intravenous Nicorandil on InHospital Outcomes of Acute Myocardial
Infarction in Comparison with Conventional
Treatment
12
Sarita Yadav, K Roshan Rao, RPS Bhardwaj, M Ahmed,
RK Bansal, CM Verma, R Thakur
LPS Institute of Cardiology, Kanpur
Numerous studies have demonstrated that by virtue of its
dual mechanism of action as a coronary and peripheral
vasodilator and its action on K-ATPase (myocardial
preconditioning), nicorandil improves tissue perfusion,
enhances the recovery of cardiac function and reduces the inhospital complications of acute myocardial infarction (MI)
There is hardly any study which compares the efficacy of
combination therapy [intravenous (IV) nicorandil ± IV
nitroglycerine (NTG)] with IV NTG alone. In the present study
64 patients with acute MI (<12 hours from onset of pain) were
randomized into 3 groups. Group I (n=10)-IV NTG alone;
Group II (n=23)- IV NTG+IV nicorandil; Group III (n=31)- IV
nicorandil alone. Dosage schedules were as follows : IV
nicorandil 2 mg bolus then 2-4 mg/hour for 48 hours / IV
NTG -5 µg/kg titrated according to response. All patients were
given aspirin, clopidogrel, low-dose statins beta-blockers, and
angiotensin-converting enzyme (ACE) inhibitors (if
hemodynamic parameters permitted). Patients were followed
up on day 2 and day 7 of hospital stay by means of
hemodynamic parameters [systolic blood pressure (SBP),
diastolic blood pressure (DBP), heart rate (HR)] and
echocardiographic variables [left ventricular internal diameter
systolic (LVIDS), left ventricular internal diameter diastolic
(LVIDD), ejection fraction (EF) and regional wall motion
abnormality (RWMA)]. Statistical analysis was done which
showed no significant difference between the IV NTG versus
the IV nicorandil group. However, the trend was toward a more
favorable outcome with nicorandil. A significant difference in
favor of combination therapy was noted (p<0.05) when
compared with conventional treatment alone (improvement
in LVEF and LVIDS was noted). The table compares the
conventional treatment with combination treatment and
changes in left ventricular (LV) function at discharge (%
change).
EF
RWMA
LVIDS
LVIDD
NTG
NTG+nicorandil
p value
0.1±2.2
0.9±0.99
0.02±0.09
0.03±0.04
2.15±1.6
1.55±1.2
0.7±0.1
0.065±0.08
<0.05 (S)
NS
<0.03 (S)
NS
NTG: nitroglycerine; EF: ejection fraction, RWMA: regiond wall motion
abnormality; LVIDS: left ventricular internal diameter systolic; LVIDD: left
ventricular internal diameter diastolic.
Nicorandil was therefore found to be useful as combination
therapy with conventional treatment for acute MI.
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Transradial Coronary Angiography
in Unselected Population
13
PK Pati, Paul V George, Sunil Chandy, Jacob V Jose, Bobby
John, P Mariappan, R David
Christian Medical College, Vellore
Transradial coronary angiography has gone through the
transformation from a highly specialized, technically
demanding procedure available to a selected population to a
simplified alternative to transfemoral route. After an initial 400
transradial catheterizations in a group of selected patients, we
decided to do the same in an unselected population. Sixty
patients seen in outpatient department and sent for
angiography were accepted but seen for the first time by the
operator in the catheterization lab. In all the cases, the
procedure was performed after confirming a positive Allen’s
test. None were excluded even though their radials were barely
palpable. Forty-eight (80%) were male. The mean age was 54
years (range: 37-74 years). The mean weight was 65 kg (range:
43 to 98 kg). Radial artery was cannulated using 20G Jelco
and 5 F sheath. Tiger (brachial type) coronary diagnostic
catheter was used for coronary angiography. The mean
fluoroscopic time was 4 min (range: 1-15 min) and the mean
procedure time 14 min (range 7-30 min). The procedure was
successful in 57 (95%) patients. In remaining 3 (patients with
barely palpable radial), the procedure was completed after
changing over to transulnar route in two and to transfemoral
in one because of unsuitable anatomy. Eighty percent of the
patients had significant coronary artery disease and rest had
minor plaque or normal epicardial coronaries. There were no
complications. Routine transradial approach is a safe
alternative to transfemoral approach in unselected population
undergoing coronary angiography.
Coital Cephalgia and Coronary Artery
Ectasia : Case Report of a Rare Association
14
Debabrata Roy, Manoranjan Mandal, Pradip Kumar
Sinha, T Sachin Deba Singh
Rabindranath Tagore International Institute of Cardiac Sciences,
Kolkata and BS Medical College, Bankura (WB)
Coital cephalgia is a headache felt at the base of skull in
relation to coitus and is present mainly among males. Coronary
artery ectasia is irregular dilation of coronary arteries and is
detected in 0.3% to 5.39% of angiographic studies. Both the
phenomenon probably occur due to abnormalities in vascular
pressor mechanism. We report the case of a young man who
had both of these diseases. To the best of our knowledge, this
is the first such case to be reported. A 42-year old young male
from Bangladesh presented to us with complaints of class II
angina. He was hypertensive, euglycemic, hyperlipidemic and
a smoker. He also had bouts of severe, abrupt headache lasting
for about 15-20 min during every coitus. His electrocardiogram (ECG), echocardiography, electroencephalography
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(EEG) and computerized tomographic (CT) scan were normal.
Treadmill test (TMT) was midly positive. Coronary angiogram
revealed ectatic left anterior descending artery (LAD), left
circumflex (LCx) and right coronary artery (RCA),
Neurologist’s opinion was taken, who diagnosed him as
orgasmic coital cephalgia. The patient was reassured and
discharged on beta-blocker, aspirin, statin and alprazolam.
Clinical and Angiographic Profile of Patients
with Combined Anterior
and Inferior ST Segment Elevation during
Acute Myocardial Infarction
16
N Ganesan, V Jaganathan, R Alagesan, M Annamalai,
S Shunmugasundram, Geetha Subramanian, A Balaguru,
G Gnanavelu, S Venkatesan, PS Mohanamurugan,
K Meenakshi
Madras Medical College, Chennai
Does the Choice of Coronary
Revascularization Depend on Risk Factor
Profile?
15
G Venkatesh, M Ramanathan, C J Reddy, KN Reddy
Vijaya Heart Foundation, Chennai
We have concrete evidence to show that more the number
of risk factors, more the chances of coronary artery disease
(CAD). However, it is not clear whether the number of risk
factors influence the choice of revascularization therapy in
Indian population. Hence we analyzed 100 consecutive
patients who underwent percutaneous coronary intervention
(PCI) or coronary artery bypass grafting (CABG) with mean
age of 55.3 years for PCI and 57.9 years for CABG group. Males
contributed 83% of study population. The results of our
analysis are shown in Tables.
Risk factor profile (in%) in PCI and CABG groups
PCI
CABG
Age>60
DM
HTN
Dyslipidemia
F/H of Smoking
CAD
BMI>25
kg/m2
28
40
62
62
58
64
38
62
16
30
40
24
22
26
Number of risk factors and type of revascularization (n=100)
No of risk
factors
0
(n=0)
1
(n=19)
2
(n=33)
>3
(n=45)
PCI
CABG
3 (100)
0 (0)
15 (79)
4 (21)
18 (54.5)
16 (45.5)
14 (31.1)
31 (68.9)
PCI: percutaneous coronary intervention; CABG: coronary artery bypass
graft; DM: diabetes mellitus; HTN: hypertension; FH: family history; CAD:
coronary artery disease; BMI: body mass index. Values in parentheses show
percentage
In patients with ≥ 3 risk factors, 69% underwent CABG
and 31% underwent PCI. In patients with
≤ 1 risk factor, 81.8% underwent PCI whereas 18.2%
underwent CABG. To conclude, higher the number of risk
factors, more severe the disease and the need for surgical
revascularization.
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Combined ST segment elevation in the precordial and
inferior leads is a rare electrogram (ECG) finding in patients
with acute myocardial infarction (MI) and its clinical
implications have been rarely reported. We evaluated the
significance of combined anterior and inferior ST segment
elevation on the initial ECG in patients with acute MI and
correlated it with clinical findings Killip class, left ventricular
(LV) function, mortality and angiographic profile. Out of a total
of 456 patients, 26 consecutive patients with combined ST
elevation in anterior and inferior leads formed the study group.
Five (17.8%) patients died during early post-MI period prior to
coronary angiography (CAG). Twenty-one patients who
underwent CAG were classified into two groups
angiographically. Angiographic data showed left anterior
descending artery (LAD) supplying more than one-fourth of
inferior wall (wrapped LAD) with the site of occlusion distal to
D1 in Group 1 patients. None of the Group 1 patients had any
significant disease of other vessels. Remaining 9 patients
formed group 2 who had two- or three-vessel disease, with
acute occlusion of right coronary artery (RCA) and chronic
total occlusion of LAD in 5 (55.5%) patients and acute
occlusion of LAD with chronic total occlusion of RCA in 4
(45.5%) patients. Electrocardiographically, Group 1 patients
had ST elevation in inferior leads <2 mm while Group 2
patients had ST elevation >2 mm. Group 2 patients had
significantly higher incidences of impaired LV function (EF <
40%; 57.1% v. 16.6%, respectively; p=0.05), cardiogenic shock
(57.1% v. 0%, p=0.004), pulmonary edema (42.8% v. 0%,
p=0.02), and cardiac death (35.7% v. 0%, respectively, p=0.03)
than did Group 1 patients. All the patients who died prior to
CAG had ECG changes similar to Group 2. To conclude, acute
MI with combined ST segment elevation in precordial and
inferior leads can be caused by either a wrapped LAD occlusion
or a non-wrapped LAD occlusion. ST elevation >2 mm in
inferior leads combined with anterior ST elevation predicts
adverse clinical outcomes.
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Increase in Coronary Perfusion following
Enhanced External Counter Pulsation
17
Pradeep Nayar, Pramod Jaiswal, Joy M Thomas,
K Jai Shankar, Binoy John, Mohammed Musthafa,
GN Prasad, KM Cherian
irrespective of the number of vessels involved. In patients with
chronic stable angina hs-CRP was significantly elevated only
in triple vessel disease. This was more so when there was diffuse
involvement of the vessels.
International Centre for Cardiovascular and Thoracic Diseases.
Chennai
Enhanced external counter pulsation (EECP) is a novel
treatment modality being investigated for intractable angina
not amenable to revascularization. The aim of our study was
to examine the improvement in coronary perfusion by rest
nuclear perfusion study in patients who have undergone EECP
treatment. A total of 36 cases (27 males were included in the
study. All cases had undergone coronary angiography (CAG)
for angina and were found to be unsuitable for
revascularization in view of diffuse disease. The age ranged
from 42 to 73 years and 72% were diabetics. Ejection fraction
(EF) ranged form 15% to 62%, All patients underwent 35 hours
(1 hour/day) of EECP. Rest thallium perfusion scan and
echocardiography were done before and at the end of therapy.
Ejection fraction EF increased by 10 to 32% ± 3.2% in the study
population. Left ventricular (LV) volumes regressed by an
average of 28.9 ml. Angina as assessed by Canadian
Candiovascular Society functional classification came down
from 3.6 to 1.2. Perfusion assessed by rest thallium scan
showed moderate improvement in nearly all cases. Quality of
life as assessed by an institutionally prepared questionnaire
showed very good improvement. We conclude that EECP is a
viable modality of therapy in patients with severe symptoms,
who are not amenable to conventional revascularization.
High Sensitivity C-Reative Protein in
Coronary Artery Disease and its
Angiographic Correlation
18
PP Mohammed Musthafa, Pramod Jaiswal,
Pradeep Nayar, Joy M Thomas, K Jai Shankar, Binoy John,
GN Prasad, Senthil Kumar, RV Sridhar, KM Cherian
International Centre for Cardiovascular and Thoracic diseases.
Chennai
Role of high sensitivity C-reactive protein (hs-CRP) in
coronary artery disease (CAD) is well established. The aim of
our study was to find out whether there is any correlation
between the level of hs-CRP and the severity of CAD as
confirmed by coronary angiogram. The level of hs-CRP in 100
consecutive patients who underwent coronary angiogram in
our hospital were studied. The indication for coronary
angiogram was chronic stable angina in 66 patients and acute
coronary syndrome (ACS) [unstable angina and postmyocardial infarction (MI) evaluation] in 34 patients. The level
of hs-CRP was found to be significantly elevated in patients
with ACS when compared to patients with stable angina.
Eighty percent of the patients with ACS had elevated hs-CRP
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Clinical and Coronary Angiographic
Association with Quantitative High
Sensitivity C-Reactive Protein Values in
Patients Admitted with Acute Coronary
Syndrome
19
Nitin M Kulkarni, Jagdish S Hiremath, MI Hasan, TS Pol
Poona Hospital and Research Center, Pune
Recently, the American Heart Association and the Center
for Disease Control released new recommendations on the
testing of C-reactive protein (CRP) levels. Previous data showed
that in patients with coronary artery disease, elevated CRP
measurement indicates more than “moderate” risk of
development of ST elevation myocardial infarction (MI). We
studied 96 patients admitted with coronary insufficiency
presenting with varying clinical and angiographic severity. Age
range was 20-80 years (mean: 57.96 years±14.9 years). There
were 79 males (82.3%) and 17 females (17.7%). CRP values
ranged from 0.3 to 10.96 µmol/L (mean 1.29±1.79 µmol/L).
Coronary angiography was done in 42/96 (43.8%) patients.
Normal hs-CRP values were observed in 57/96 (59.4%)
patients, mildly elevated in 24/96 (25.0%) and significantly
elevated in 15/96 (15.6%) patients. No association of hs-CRP
values was observed with age (p>0.05). Statistically significant
correlation (p<0) was observed between duration of symptoms
and CRP values; maximum values were seen with symptoms
of >48 hours duration. Significant correlation (p<0.05) was
observed between severity of hypertension and CRP values.
There was no statistically significant correlation (p>0.01)
between CRP values with patients with non-ST elevation MI,
ST elevation MI and unstable angina. No association was seen
(p>0.01) between CRP values and severity of coronary artery
involvement on coronary angiography. Abnormally high hsCRP values were observed in 40.6% patients admitted with
acute coronary syndrome. No statistically significant
association of hs-CRP values were observed with age, severity
of clinical presentation and findings on coronary angiography.
Clinical Profile, Coronary Angiography and
Thallium Perfusion Study Patterns in Young
Myocardial Infarction Patients of Age 40
Years or below
20
G Karandikar Neelkanth, SM Bhat
BJ Medical College and Sassoon General Hospital, Pune
In this ongoing study, patients (n=25 to date) of acute
myocardial infarction (MI) of age 40 years and below admitted
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in our hospital, from December 2001 onward were studied,
with special reference to their coronary risk factors, clinical
profile, coronary angiographic patterns and correlation with
myocardial perfusion. The main findings are outlined here.(i)
Even in patients of MI at younger age, there is striking increase
in the incidence of disease as age advances and it is
predominantly a male disease, being less common in young
menstruating women. (ii) Cigarette smoking and hypercholesterolemia are the two most important, independent
modifiable major risk factors for MI at younger age. (iii) Positive
family history of ischemic heart disease is also found to be one
of the important risk factors in present study. (iv) Diabetes
mellitus and hypertension are less important risk factors for
young infarcts but they appear to play a role in the older age
group i.e. 36-40 years specially in association with
hypercholesterolemia. (v) Smoking hyper-cholesterolemia and
positive family history are associated with multivessel disease.
(vi) The commonest symptom was chest pain (92%); majority
were in Killip class I (84%) and anterior MI was seen in 52%.
(vii) The commonest vessel involved in young MI was left
anterior descending artery. (viii) Older patients in this group
(36-40 years) had more risk factors, and higher incidence of
multivessel disease. (ix) Patients <35 years of age had less
severe coronary artery disease (CAD); in patients with
significant disease in this group, single vessel disease
predominates, left anterior descending artery being major
culprit artery. (x) Sensitivity and specificity of myocardial
perfusion scan to detect myocardial perfusion defects was 81%
and 80.3% and stress-induced reversible ischemia was 65.3%
and 87.6% respectively.
Hyperhomocysteinemia as a Risk Factor for
Recurrent Coronary Events and Heart Failure 21
SD Singh, KR Singh, PC Mondal, DP Sinha
Regional Institute of Medical Sciences, Imphal, Apollo Gleneagles and
Institute of Post Graduate Medical Education and Research, Kolkata
Thirty proven patients (24 males, mean age 52±9.1 years)
of acute coronary syndrome (ACS) and hyperhomocysteinemia (Group I) (estimated by cheminoluminiscent
enzyme immunoassay techinique) were followed up for a
period of 6 months, and compared with 24 (19 males, mean
age 56±9.2 years) patients (Group II) of ACS who had no
evidence of hyperhomocysteinemia. Both group of patients
had similar conventional risk factors. Mean homocystine in
Group I was 28.6±13.8 µml/L and 10.4±1.6 µml/L in Group
II. Both groups had comparable patterns of ACS and received
only standard treatment of ACS. At 6 months follow up, Group
I patients had a total of 28 episodes of recurrent ACS,
compared to 11 episodes in group II. Ejection fraction estimated
by transthoracic echocardiogram (TTE) at 6 months was
35.1±8.42% in Group I and 48.2±6.52% in Group II. which
was statistically significant (p<0.05). Thus, hyperhomo-
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cysteinemia has a positive predictive value of 72% and negative
predictive value of 86% for recurrent ACS, and also has a good
correlation with left ventricular (LV) dysfunction. However,
larger studies are required.
Ideal Hardware for Selective Coronary
Cannulation Using Transradial Approach
22
G Sengottuvel, Georgey Koshy, Madan Mohan, Sai Satish,
S Thanikachalam
Sri Ramachandra Medical College and Research Institute, Chennai
Transradial approach is increasingly used for coronary
diagnosis and intervention. This study consisted of the analysis
of prospectively collected data on transradial coronary
angiography and coronary interventions, performed mostly
via the right radial approach by a single operator over a period
of one and half years. The only contraindication was the
absence of perfusion from the ulnar artery when the radial
artery was occluded by pressure as assessed by Allen's test
carried out systematically by the operator. Of 765 patients who
underwent radial approaches, a total of 643 patients
underwent transradial coronary angiography from December
2003 to April 2005. Number of males were 490 (76.2%) and
females were 153 (23.8%). Single catheter was used for
engaging both left and right coronary artery in 437 patients .
Terumo brachial type was used as single catheter in 327
(74.8%) patients, left Amplatz was used as single catheter in
76 (17.3%) patients, Judkins left 3.5 was used as single catheter
in 33 (7.5%) patients. Multipurpose as single catheter was used
in one (0.23%) patient. Two catheters were used in 201
patients. Judkins left and right were used in 110 (54.7%)
patients. Amplatz and Judkins were used in 63 (31.3%)
patients, AL1 and AL2 in 23 (11.4%) patients, Terumo and
multipurpose in 2 patients, while Terumo and Amplatz in 3
patients. Three catheters (Judkins/Amplatz left/Terumo) were
required in 5 patients. 4 F catheters were used in 13 patients
and 5 F catheters were used in 630 patients.The transradial
angiography is possible with single catheter in majority of
patients (60.6%). The Terumo brachial type was the most
frequently used single catheter and is the catheter of choice
followed by left Amplatz catheter. The other catheters include
Judkins left and Multipurpose.
Vascular Anatomic Challenges Encountered
during Transradial Approach for Coronary
Diagnosis and Intervention
23
G Sengottuvel, Sai Satish, Madan Mohan, Georgey Koshy,
S Thanikachalam
Transradial approach is increasingly used for coronary
diagnosis and intervention. This study consisted of the analysis
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of prospectively collected data on transradial coronary
angiography and coronary interventions, performed mostly
via the right radial approach by a single operator over a period
of one year. The only contraindication was the absence of
perfusion from the ulnar artery when the radial artery was
occluded by pressure as assessed by Allen's test carried out
systematically by the operator. The data regarding vascular
challenges such as loops, tortuousities etc. were collected
prospectively. A total of 765 patients underwent transradial
catheterization from December 2003 to April 2005 of which
593 (77.5%) were males and 168 (22.5%) were females. Two
patients had anomalous radial origin and had to be punctured
close to the anatomical snuff box. Seven patients had moderate
to severe forearm loops which were successfully crossed using
0.025" Terumo wire and 0.014" coronary guidewire and one
patient had a loop in the arm. Six patients had high take off
radial artery from the arm. Four patients had moderate to
severe subclavian loops which was successfully crossed. Mild
subclavian tortuosity and abnormal subclavian take offs were
seen in 144 (18.8%) patients and successfully crossed The
retroesophageal right subclavian artery (arteria lusoria) is the
most common congenital aortic arch anomaly with an
incidence of one percent in our study. The anomalous origin
of the right subclavian from the descending aorta renders
difficulty to the completion of angiography by the right radial
approach. This anatomical anomaly was negotiated using a
Terumo wire and the aortic root was reached from the
descending aorta to complete the angiogram in all except one
case. Judkins catheter was the most successful catheter for
selective coronary cannulation. The incidence of forearm loops
(1%) and subclavian tortuosity is significant and not a
limitation for radial approach. The incidence of Arteria Lusoria
is one percent. Transradially, coronary angiogram is possible
in these subsets also. This preliminary study revealed that the
interventionist should be ready to recognize these anomalies
so that radial approach coronary angiography is still possible
by adopting instant strategic planning.
Adult Non-Twin Sib-pair Concordance Rates
for Type 2 Diabetes and Hypertension in
Asian Indians with Early Onset Coronary
Artery Disease : Indian Atherosclerosis
Research Study
24
J Shanker, M Mukherjee, P Ganapathy, S Kanjilal,
SS Iyengar, VV Kakkar
Narayana Hrudayalaya Bangalore and Thormbosis Research
Institute, London, UK
Non-insulin-dependent diabetes mellitus (NIDDM) and
hypertension are both established cardiovascular risk factors
with a multifactor etiolgy. While obesity, diet, stress and
physical inactivity have been identified as the most likely
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enviornmental precipitants, evidence for strong genetic
etiology comes from twin studies and familial clustering. The
aim of the present study was to determine the adult sib-pair
and corresponding spouse-pair concordance rates for NIDDM
and hypertension in the Indian population to evaluate the
relative contribution of shared genes or environmental factors
in these traits. Data from eighty families with a history of early
onset of coronary artery disease (CAD) comprising of 444
individuals, 157 sib-pairs and 73 spouse pairs were analyzed.
The proportion of subjects with NIDDM or hypertension was
significantly higher in the affected group as compared to the
family members without the trait. The non-twin sib-pair
concordance rate for NIDDM was 19% while the spouse-pair
concordance rate was 4%, the difference being significant
(p=0.0048). For hypertension, the difference was not
significant (non-twin sib-pairs: 13%; spouse pairs: 5%). In
conclusion, employing sib-pair concordance rates, the present
study demonstrates a highly probable genetic component in
the causation of NIDDM in the Asian Indian population.
Expression of Interleukin-1 Alpha Gene and
Circulating Levels of Interleukin-6 and
Plasminogen Activator Inhibitor-1 :
Preliminary Findings of the Indian
Atherosclerosis Research Study
25
VS Rao, M Mukherjee, B Natesha, VV Kakkar
Narayana Hrudayalaya, Banglore and Thrombosis Research Institute,
London, UK
Heritability of age- and sex-adjusted body mass index (BMI)
was observed in 125 families having 431 parents and offspring
(H21=0.27; SE=0.09; p=0.001). Interleukin-6 (IL-6) Creactive protein (CRP) and plasminogen activator inhibitor-1
(PAI-1) (ELISA) increased across the quintiles of BMI
(p=0.0001; one-way ANOVA). As the levels of IL-6 and PAI-1
were shown to be controlled by IL-1 alpha gene, among others,
in certain cell types, the aim of the study was to evaluate the
expression of IL-1 alpha in patients of coronary artery disease
(CAD) and controls having the lowest or highest quintiles of
BMI, and correlate gene expression with circulating levels of
IL-6, CRP and PAI-I. Twenty CAD patients referred for coronary
artery bypass grafting (CABG), 13 of them on statin
medication and 19 unaffected family members and one on
statin, were included. Total RNA was extracted from baseline
samples of peripheral blood and the level of IL-1 alpha
expression quantified by one-step reverse transcription PCR
using beta-actin as the control gene and evaluated on agarose
gels as the ratio of IL-1 alpha to control gene band intensity.
The CAD patients had a higher level of IL-1 alpha expression
relative to controls (mean±SD, 0.78±0.24 v. 0.63±0.12;
p=0.016). This difference was more pronounced in the top
quintile of BMI (0.91±0.22 for patients versus 0.61±0.009
for controls; p=0.001). The expression of IL-1 alpha was
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higher in the patients in the highest relative to the lowest
quintile of BMI (0.91±0.22 v. 0.66±0.19; p= 0.014). The level
of gene expression correlated with PAI-1 (r=0.93; p<0.0001)
and BMI (r=0.504; p=0.023) but not with IL-6 or CRP possibly
reflecting the effect of statin therapy and/or the regulatory
effect of other genes on their expression. Despite its inherent
limitations, this study demonstrated for the first time a possible
regulation of PAI-1 (synthesized partly in adipocytes) by IL-1
alpha gene in humans.
Coronary Risk Factors in Relation to Regional
26
Origins of Asian Indians: Indian
Atherosclerosis Research Study
S Kanjilal, M Mukherjee, VS Rao, BK Natesha, K Sibi,
B Dhanalakshmi, SS Iyengar, S Kumavat, S Lobo,
VV Kakkar
Narayana Hrudayalaya, Bangalore; Asian Heart Institute, Mumbai;
and Thrombosis Research Institute, London, UK
Most of the conventional coronary risk factors are
multifactorial with genetic and non-genetic etiology. In view
of the restricted population admixture among Indians of
varied regional origin due to prevailing socio-cultural
conditions, and the distinctive regional cuisine, the aim of this
study was to evaluate for the first time any difference in the
prevalence of coronary risk factors among Indians having
their origins in the east, west, north or south of the country.
One thousand one hundred and sixty one coronary artery
disease (CAD)-affected and unaffected members from 229
families, 187 enrolled in Bangalore and 41 in Mumbai were
included in the analysis. The mean age of onset of CAD was
47.7±7.2 years, 50.1±10.9 years, 47.0±13.2 years and
51.6±9.7 years, respectively for patients from the east, west,
north and southern parts of the country. The prevalence of
Type 2 diabetes mellitus was 33% in the east, 18% each in the
west and north, and 25% in the south. The prevalence of
hypertension was 30%, 29%, 21% and 23% in the east, west,
north and south, respectively. The proportion of vegetarians
was 3%, 83%, 64% and 42% among people hailing from the
east, west, north or south of the country, respectively. Of all
those included, 54% from the east 50% from the west, 48%
from north and 50% from south were overweight [body mass
index (BMI)>25 kg/m2]. The proportion of patients with triplevessel disease was 50% each from the east and western regions,
38% from north and 36% from south. Triglyceride (p=0.009)
and high-density lipoprotein (HDL)-cholesterol (p<0.0001)
among males, and lipoprotein(a) (p=0.025) among females
exhibited a significant region-wise variation. The mean level
of HDL-cholesterol was lowest in males and females of the
eastern region. This study demonstrated for the first time a
variation in coronary risk factors in the Indian popution based
on their region of origin.
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390
Heritability of Quantitative Phenotypes:
27
Lipids, Coagulation, Pro-inflammatory, Cell
Adhesion and Anthropometric Markers in the
Presence or Absence of Coronary Artery
Disease in Parents
VS Rao, M Mukherjee, S Kanjilal, B Natesha, R Kumar,
Narayana Hirudayala, Bangalore; Asian Heart Institute, Mumbai;
and Thrombosis Research Institute, London, UK
Heritability may be defined as the proportion of phenotype
variance attributable to genetic variance. The aim of the study
was to determine heritability of quantitative phenotypes
associated with risk of coronary artery disease (CAD). Parents
and offspring (n=365) wherein at least one parent had CAD
(Group 1) and 69 parents and offspring wherein neither any
parent nor offspring had CAD (Group 2) were evaluated. Lipid,
lipoprotiens and apolipoproteins were estimated by standard
enzymatic and immunoturbidometric methods. Markers of
coagulation and fibrinolysis were estimated by clot-based
method or antigenic assay. The pro-inflammatory and cell
adhesion moleculaes were measured by ELISA. The
anthropometric markers consisted of body mass index (BMI),
and waist-hip ratio (WHR). Heritability was estimated by
variance components analysis using the SOLAR program with
covariate adjustment for age and sex. In the combined groups
1 and 2, quantitative phenotypes that exhibited significant
heritability (SE) were as follows: (i) total cholesterol: 0.57
(0.08), p=6.0E-10; (ii) high-density lipoprotein-cholesterol
(HDL-c): 0.49 (0.09), p=3.2E-8. (iii) low-density lipoprotein
cholesterol (LDL-c): 0.56 (0.09), p=3.2E-9; (iv) triglyceride:
0.58 (0.07), p=4.2 E-14; (v) apolipoprotien A1: 0.80 (0.05),
p=1.8 E-13; (vi) lipoprotein(a): 0.92 (0.10), p=6.9 E-9; (vii)
fibrinogen: 0.43 (0.09), p=1.7 E-6; (viii) FVII.c : 0.76 (0.07),
p=4.8E-20; (ix) plasminogen activator inhibitor-1 (PAI-1),
0.52 (0.12) p=7.9E-6; (x) interleukin 6: 0.60 (0.14), p=4.9
E-6; (xi) C-reactive protein: 0.34 (0.14), p=0.0005; (xii) soluble
p-selectin: 0.46 (0.14), p=0.0002; (xiii) soluble ICAM-1: 0.81
(0.08), p= 2.8 E-16; (xiv) body mass index (BMI): 0.27 (0.09)
p=0.001; (xv) WHR: 0.36 (0.10), p=3.0 E-6. Of the
phenotypes that exhibited strong heritability in Group 1 but
weak or no heritability in group 2 included (i) HDL-c 0.48
(0.09), p=1.0 E=7; (ii) soluble p-selectin, 0.43 (0.12)
p=0.00054; (iii) lipoprotein(a): 1.0, p=3.0 E-7; (iv) PAI-1: 0.41
(0.13), p=0.0008; (v) BMI: 0.30 (0.10) p=0.001. This study
demonstrate for the first time heritability of a number of
phenotypes in families where at least one parent was affected
with CAD.
11/24/2005, 10:45 AM
Indian Heart J 2005; 57: 381–425
ApoC 111-Sac 1Gene Polymorphism in Asian
Indians with Early Onset Coronary Artery
Disease - Association and Linkage Studies:
Indian Atherosclerosis Research Study
28
M Mukherjee, J Shanker, V Rao, P Ganapathy,
BK Natesha, S Kanjilal, SS Iyengar, VV Kakkar
Narayana Hrudayalaya, Banglore and Thrombosis Research Institute,
London, UK
The apolipoprotein (Apo) C111 gene located on
chromosome 11q 23-24 is a part of the Apo A1-C111-A1VAV gene cluster. The Sac-1 polymorphism and its S1 variant
minor allele resulting from a C>G substitution in the 3'
untranslated region of the Apo C111 gene has been shown to
influence plasma triglyceride (TG) levels. Elevated TG level is
an important risk factor for coronary artery disease (CAD). The
aim of this study was to determine the heritability of TG and
to evaluate its relationship with Sac-1 genotype and linkage
with CAD in a family-based study and in an independent casecontrol cohort. The study group comprised of 125 families
with 688 individuals recruited from Bangalore and 252 CAD
cases and as many age sex-matched controls from Mumbai,
Heritability of log TG was 0.58 (SE=0.07; p=4.15; E-14) after
covariate adjustment, for age, sex and age by sex using the
SOLAR program. The TG levels increased from S2S2
(135.9±6.0) through S1S2 (151.1±10.2) and S1S1
(166.7±16.6) genotypes in the affected and unaffected family
members, the difference being statistically significant in the
latter (p=0). The observed proportion of 2-, 1-, 0- allele sharing
among 76 affected sib-pair (0.40, 0.54 and 0.06) deviated
significantly from the expected proportions (0.25, 0.50, 0.25)
(χ2=34.82; df=2; p=<0.0001). The S1 allelic frequency in the
affected individuals (0.37) differed from that in the controls
(0.30) in the case-control study. Also the percentage of
individuals with S1S1 and S1S2 genotypes was 61% for cases
and 51% for controls [odds ratio (OR) and 95% confidence
interval (CI): 1.48 (1.04-2.10; p=0.03)]. Thus for the first time,
this study demonstrates a genotype-disease relationship in the
Indian population and a probable linkage of the Apo C111
locus with CAD.
obvious coronary risk factors presented to our emergency
department with acute onset retrosternal chest discomfort of
30 min duration. The serial electrocardiograms (ECGs)
revealed T inversion in V1-V4 without any ST depression or new
Q waves. After one hour of hospitalization the patient became
pain-free with low molecular weight heparin (LMWH) and
other antianginals. The patient remained hemodynamically
stable. His serial troponin (Trop I) values were elevated (Trop I
at 6 hours 2.48 mcg/dl and after 12 hours 3.4 mcg/dl. On
clinical examination, there was mild conjunctival congestion.
His hemoglobin was 18.6 gm/dl with PCV of 58% at the time
of admission. His echocardiographic study (Echo) revealed
hypokinesia of apical interventricular septum (IVS), apex and
partly anterior wall with left ventricular ejection fraction
(LVEF) of 50%. He was subjected to coronary angiography
which revealed no significant coronary artery disease (CAD)
or thrombus with TIMI III coronary flow. There was
hypokinesia of anterolateral and apical segment in LV
angiogram in right anterior oblique (RAO) view. His three
subsequent serial hemoglobin levels were >18 gm/dl and all
the PCV values were >55%. In further hematological
evaluation he was found to have polycythemia. We reviewed
the literature which revealed few case reports of polycythemia
with various spectrum of acute coronary syndrome including
ST elevation myocardial infarction (MI). To conclude,
polycythemia could be a rare cause of acute coronary
syndrome. Therefore hemoglobin and PCV assessment should
be a routine investigation in all cases of ACS particularly in
young patients with ACS without any obvious conventional
coronary risk factor.
Clinical Profile of Patients of Angina with
Slow Flow and Normal Coronary Angiogram
30
A Mehta, R Passey, JPS Sawhney, RR Mantri, B Kandpal,
A Mohanty, S Dhawan, R Jain,
R Mohan, S Sachdeva, VK Talwar, PK Khanna
Sir Ganga Ram Hospital, New Delhi
A Rare Cause of Acute Coronary Syndrome
Resulting from Polycythemia
29
A Mohanty, SC Manchanda, S Dhawan, JPS Sawhney,
RR Mantri, B Kandpal, R Jain, R Passey, A Mehta,
R Mohan, S Sachdeva, PK Khanna, Manish Jain,
Vipin Talwar
A 42-year-old male without any history of diabetes
mellitus, smoking, hypertension, dyslipidemia or any other
A.p65
391
We analyzed the angiograms of patients who had come
with classical history of chest pain and had slow flow in the
coronary arteries. Patients with structural heart disease were
excluded from this study. We defined the slow flow as corrected
TIMI frame count (CTFC) ≥ mean of 13 at a frame rate of 12.5/
s, that is, >2 standard deviations of mean CTFC (9.0±1.4)
calculated for the 100 Indian patients with normal coronaries
and normal flow (TIMI grade III) performed at our laboratory.
Clinical profile of the 45 patients showing slow flow in the
11/24/2005, 10:45 AM
Indian Heart J 2005; 57: 381–425
structurally normal coronary arteries is given in the table.
Age (years)
Hypertension
NIDDM
Smoking
Typical angina
Positive TMT
Relief by nitrates/
nicorandil
Dyslipidemia
Male (n=18)
Female (n=27)
46.6±3.1
10 (55.5%)
6 (33.3%)
12 (66.6%)
12 (66.6%)
8 (44.4%)
6 (33.3%)
36.3±2.9
13 (48.1%)
8 (29.6%)
0
16 (59.2%)
21 (77.7%)
12 (44.4%)
11 (61.1%)
18 (66.6%)
Angiographic Profile of Diabetes Mellitus
P Sreekala, Mathew Iype, VV Radhakrishnan,
K Sivaprasad, K Sunitha, K Suresh, CG Bahuleyan,
Geogre Koshy
32
NDDM: non-insulin-dependent diabetes mellitus; TMT: treadmill test
Medical College Hospital, Thiruvananthapuram
We conclude that slow flow is more common in female patients.
Females were younger than males by a decade in our study.
Hypertension, diabetes nellitus, and dyslipidemia are more
commonly associated in both females and males. Smoking is
the commonest association in male patients. All females were
pre-menopausal.
Diabetes mellitus is a well known cause for accelerating
atherosclerosis and complex lesions. Earlier studies have
established more incidence of multivessel and diffuse vascular
disease in diabetics. This study reviewed the type, pattern and
extent of coronary artery involvement in diabetics. Coronary
angiograms of 500 diabetic patients were evaluated in detail
and compared with 200 angiograms of non-diabetics. The
angiograms done from January 2004 in our institution were
randomly selected for study. Among 500 diabetic patients, 375
(73%) had chronic total occlusion involving single vessel, 140
(24%) had 2-vessel involvement and 72 (14%) had 3-vessel
chronic total occlusion (CTO). The corresponding values in
non-diabetics were 84 (42%), 43 (21%) and 10 (5%),
respectively (p<0.001). Diffuse lesions were observed in 235
(47%) diabetics and 48 (24%) non-diabetics. Diabetic cohort
had significantly higher 3-vessel disease involving 270 (54%)
versus 24 (12%) in non-diabetics. Single vessel disease
involvement correspondingly in diabetics and non-diabetics
was 107 (21.4%) and 84 (42%) whereas 2-vessel disease
occurred in 120 (24%) and 62 (31%). Left main coronary
artery (LMCA) involvement was higher in diabetic cohort -185
(37%) versus 42 (21%) (p<0.001) patients. Bifurcation lesions
were higher in diabetics - 215 (43%) versus 24 (12%); calcified
lesions were observed in 340 (68%) diabetics versus 76 nondiabetics (38%).
Angiographic Profile of Patients with Acute
Coronary Syndrome in a Tertiary Care Centre
31
N Murali Krishna, Ali Faizal, Asishkumar Mandalay,
K Dineshbabu, CV Umesan, J Devi, Somy Mathew,
Litty Jose
Malabar Institute of Medical Sciences, Calicut
Total number of admissions over a period of six months
with a diagnosis of unstable angina/non-ST elevation
myocardial infarction (NSTEMI) were 502 patients. Of this,
317 patients were treated as unstable angina and 185 patients
as NSTEMI, based on the troponin I values. Among the NSTEMI
patients, 40 underwent coronary angiogram. Only one patient
had normal coronary arteries. Majority (60%) had triple vessel
disease. More patients were having left ventricular (LV)
dysfunction, compared to unstable angina cohort. Of the 317
patients with a diagnosis of unstable angina, with
electrocardiographic (ECG) changes and typical symptoms,
127 (40%) patients underwent coronary angiogram.Thirtyone (24.5%) patients had normal coronary arteries and 2
(1.5%) patients had ectatic coronary arteries with no
significant flow limiting lesions. Among the rest, 20 (16%)
patients had single vessel disease, 23 (18%) patients had double
vessel disease and 51 (40%) patients had triple vessel disease.
Majority (85%) of patients had normal LV function. The risk
factor profile of those who underwent coronary angiogram
were as follows - 48% had systemic hypertension, 45% had
diabetes mellitus and 29% had hyperlipidemia. Majority had
multiple risk factors. Troponin I positivity in acute coronary
syndrome puts the patient in a higher risk category. This is
reflected in our study as well. Troponin I positive group had
more severe coronary artery disease (CAD) and more number
in this group had LV dysfunction. Use of coronary angiogram
in unstable angina patients helped in management decisions.
A.p65
Those with normal coronaries who had been on medications
were reassured and thus the burden of long-term drug therapy
was negated.
392
CTO 1-vessel
CTO 2-vessel
CTO 3-vessel
Diffuse disease
3-vessel disease
2-vessel disease
LMCA
Bifurcation
Calcification
DM (n=500)
Non-DM (n=200)
375
140
72
235
270
120
185
215
340
84
43
10
48
24
62
42
24
76
DM: diabetes mellitus; CTO: chronic total occlusion; LMCA: left main
coronary artery
To concluded, diabetes mellitus results in a higher incidence
of chronic total occlusions, and more diffuse coronary lesions.
LMCA involvement was also higher in diabetics. Majority of
diabetics had 3-vessel disease. Complex lesions (bifurcation)
and calcification was significantly higher in diabetics.
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Role of 64-Slice Spiral-Computed
Tomographic Angiography in the Evaluation
of Coronary Artery Disease
33
S Anandaraja, S Kathuria, A Prakash, S Raja, K Ahlawat,
B Aggarwal, S Mukhopadhyay, J Yusuf, R Batra, S Tyagi
GB Pant Hospital and DCA Imaging Centre, New Delhi
Coronary angiography (CAG) is the gold standard for
evaluation of the luminal narrowing of coronary arteries. An
accurate non-invasive technology for the diagnosis of coronary
artery disease (CAD) will be advantageous. Impressive image
quality and non-invasive nature of multislice computed
tomography angiography (CTA) makes it a powerful tool in the
evaluation of CAD. In addition, cardiac CTA also evaluates the
vessel wall. With the current generation scanners, the
correlative accuracy has improved markedly. This study sought
to investigate the accuracy of 64-slice CT in the evaluation of
significant CAD as compared to coronary angiography. Thirtyone consecutive patients (mean age 50.9±8.8 years) who had
undergone CAG for evaluation of CAD were included in the
study. The study population also included one post-coronary
artery bypass grafting (CABG) and 4 post-stent patients. All
the patients were subsequently subjected to imaging by 64slice CT angiogram by the standard protocol after adequate
beta-blockade. Patients with a high calcium score > 400 were
excluded. Both CAG and multislice CT were analyzed by two
independent investigators. All vessels > 1.5 mm were
considered for assessment of significant coronary artery
stenosis (diameter reduction >50%). The coronary arteries
were segmented according to the guidelines of the American
Heart Association. One patient was excluded because of high
calcium scores. Of the 360 segments studied, 97% segments
had satisfactory image quality. Out of four patients with stented
segments, the lumen could be adequately imaged in 3 patients.
The sensitivity, specificity, positive predictive value and negative
predictive value in our study were 92%, 98%, 90% and 99%,
respectively. CTA correctly identified all 4 patients having no
significant stenosis on invasive angiography. Multislice CT
provides high diagnostic accuracy in assessing coronary artery
stenosis.
Non-Invasive Coronary Angiography with
High-Resolution Multidetector RowComputed Tomography: Single Centre
Experience
34
K Jani, N Tanwar, A Ranjan, F Panchal, R Pothiwala,
SM Shah, H Malhotra, S Shah, T Patel
Sterling Hospital, Ahmedabad
A new generation of multidetector row-computed
tomography (MDCT) (Brilliance 40, Philips Medical Systems)
scanners allow complete coronary coverage using
electrocardiographic (ECG) gating and 1 mm slices. We present
our preliminary experience of the potential of high resolution
A.p65
393
MDCT angiography with ECG gating for detection of coronary
artery stenosis. A total of 10 patients underwent both MDCT
and conventional coronary angiography. After intravenous
injection of a non-ionic contrast medium the entire heart was
scanned within a single breath hold using 1 mm slices. All
MDCT data sets were reconstructed with retrospective gating
at 20% to 80% in increments of 10% relative to the cardiac
cycle. Two reviewers analyzed image quality for segments 1-4
right coronary artery (RCA), 5-10 left main coronary artery
(LMCA), and left anterior descending (LAD), and 11-12 left
circumflex (LCx) artery. These segments were evaluated for the
presence or absence of significant (50%) stenosis. The results
were compared with those of invasive coronary angiography.
Out of a total of 120 segments analyzed by MDCT coronary
angiography, 97 were found normal, 23 had significant
lesions. These 10 patients underwent coronary angiography
within two weeks of MDCT angiogram. Compared with
conventional angiography 2 lesions [1 each in posterior
descending (PDA) and RCA] were missed by MDCT, 1 lesion
(acute marginal) was overdiagnosed and in 2 lesions severity
was significantly underestimated. For all other segments and
lesions, results of both conventional and MDCT coronary
angiography were concordant. The study is ongoing and final
results will be presented. High-resolution MDCT angiography
with ECG gating permits the non-invasive detection of
coronary artery stenosis with high accuracy if image quality
is optimized for each of the three major coronary arteries.
One-Year Follow-up of Patients with Triple
Vessel Disease (Recommended CABG) on
Intense Medical Management
35
Aashish Contractor, Pradnya Salgaonkar, Jigar Shah,
Sangeetha Subramanium, Siddhartha Angadi,
Ramakanta Panda
Asian Heart Institute, Mumbai
Forty-eight patients who were diagnosed with triple vessel
coronary heart disease (CHD), and advised coronary artery
bypass graft (CABG) surgery by their interventional
cardiologist, consulted our cardiovascular surgeon. On
reviewing the angiography, the surgeon opined that surgery
could be deferred, and recommended intense medical
management, for which the patients were enrolled in the
cardiac rehabilitation program. Their risk factors were
aggressively controlled both pharmacologically and with
lifestyle modification, according to international guidelines:
blood pressure (BP) below 120/80 mmHg; total cholesterol <
200 mg/dl; triglycerides < 150 mg/dl; low-density lipoprotein
(LDL) cholesterol <100 mg/dl; high-density lipoprotein (HDL)
cholesterol >40 mg/dl. Other goals included smoking
cessation, tight blood glucose control in diabetics, daily physical
activity of at least 30 min, and a diet low in saturated fat and
high in complex carbohydrates, fruits and vegetables. Patients
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Indian Heart J 2005; 57: 381–425
were followed-up thrice a week for an average duration of 33
sessions (~3 months). They were made to exercise under
telemetry supervision for duration of 45-60 min at an intensity
of 60-80% of maximal heart rate. Their diets were analyzed
through a 3-day food recall and appropriate recommendations
made, to keep their total fat intake <30%, and saturated fat
intake <7%. Their BP was evaluated at each visit, both at rest
and during exercise. Diabetics had their blood sugar measured
before and after exercise. Their anti-diabetic medications were
titrated according to their responses. Lipid profiles were
measured every 3 months. To achieve these risk reduction
targets, medication changes were made in conjunction with
the patient’s cardiologist. At the time of reporting all 48
patients were stable and had not experienced a cardiac event,
including myocardial infarction (MI) or coronary intervention.
Of these, 18 patients) had completed one year from the time
of their initial angiography. With aggressive medical
management and lifestyle modification, coronary intervention
can be avoided in selected cases of patients with triple vessel
CHD.
Prognostic Value of TIMI Score in ST
Elevation Myocardial Infarction in Indian
Patients
36
Cherian George, F Sushmita, B Isaac, MJ Santhosh,
GG Shetty, K Varghese, CB Patil, SS Iyengar
St John’s Medical College, Bangalore
Considerable variability in short-term mortality risk exists
among patients with ST-elevation myocardial infarction
(STEMI). Risk assessment of these patients helps in triage and
therapeutic decisions. This study reports the assessment of risk
among 74 consecutive patients who presented with STEMI to
our hospital between August 2004 and April 2005. The TIMI
risk score was used to calculate the risk of these patients so
that each patient obtained a score between 0 and 14. The mean
age of the patients was 58.42±12.28 years and 16% were
females. Hypertension and diabetes were present in 42% each,
51% had dyslipidemia and 23% were smokers. Anterior or
lateral wall infarction was present in 58% of the patients while
rest had inferior wall infarction; 65% of these patients were
thrombolyzed, 47% received streptokinase and the rest 18%
received tissue plasminogen activation (tpa). Forteen percent
patients underwent primary percutaneous transluminal
coronary angioplasty (PTCA) and rest 21% were not
thrombolyzed due to late presentation. The number of patients
with risk scores of 0, 1, 2, 3, 4, 5, 6, 7, 8 and >8 were 0, 7, 4,
13, 16, 7, 10, 5, 6 and 6, respectively. The 30-day mortality
A.p65
394
rates of patients with each score were 0%, 0%, 0%, 7.69%,
12.5%, 14.2%, 20%, 20%, 33.33% and 33.33% as against
0.8%, 1.6%, 2.2%, 4.4%, 7.3%, 12.4%, 16.1%, 23.4%, 26.8%
and 35.9% in the original study (TIME II trial). The similarity
of the mortality rates between the study groups indicates the
usefulness of the TIMI score in patients with STEMI in risk
assessment.
Coronary Artery Disease in Young : Risk
Factors and Angiographic Analysis
37
SN Routray, CK Mishra, S Rout, A Mishra, HN Mishra,
M Behera
The prevalence of coronary artery disease (CAD) in young
(< 40 years of age) is rapidly increasing in developing countries
like India. This study was undertaken with the aim of
identification and determination of the relative role of
coronary risk factors in premature CAD, and to assess the
pattern and severity of coronary artery lesions in this subgroup
with a view to correlate them with the risk factors in patients
from this part of the country. Ninety-six patients of 40 years
or less who had undergone coronary angiography during the
period from January 2003 to May 2005 were included in this
study. The mean age was 36.3 years (range: 12- 40 years) and
94% were male. Acute myocardial infarction (MI), chronic
stable angina (CSA), unstable angina (UA) and atypical chest
pain were present in 63, 14, 6 and 13 patients, respectively.
Normal left ventricular (LV) function [ejection fraction (EF) >
50%] was present in 47%, mild LV dysfunction (EF 35 – 49%)
in 45% and severe LV dysfunction (EF < 35%) was present in
8% of patients. Dyslipidemia, smoking and hypertension were
present in 88%, 40% and 30% of cases, respectively. Coronary
angiography revealed no significant disease in 21% and single
vessel disease (SVD), double vessel disease (DVD) and triple
vessel disease (TVD) in 47%, 17% and 16% of patients,
respectively. Five patients had additional left main disease. It
was observed that dyslipidemia and smoking are the major risk
factors associated with CAD in young and SVD involvement
particularly that of left arterior descending artery (LAD) was
common.
Coronary Angiographic Profile in Diabetics
and Non-Diabetics: A Comparative Study
38
Girish K Sonwalkar, KS Somashekar
SDM College of Medical Sciences, Dharwad (MS)
Coronary angiography (CAG) is presently the gold standard
investigation in the evaluation of coronary artery disease
(CAD). This study is a retrospective analysis of the angiogaphic
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Indian Heart J 2005; 57: 381–425
profile of 1425 patients who underwent CAG in our institution
between 1996 and 2004. The clinical indications for CAG were
stable angina, unstable angina and post-myocardial infarction
(MI) angina. Consecutive patients (n=1425) were subjected
to cardiac catheterization for evaluation of suspected ischemic
heart disease (IHD); 1420 patients through femoral artery and
5 through brachial artery. CAD was defined as > 50% diameter
stenosis in one of the vessels. Out of 1425 patients, 1078 had
significant CAD, and 415 (30%) were diabetic. Out of 1078
patients, 404 (38%) had single vessel disease (SVD), 300 (27%)
had double vessel disease (DVD) and 374 (35%) had triple
vessel disease (TVD). Out of 374 TVD cases, 68% were diabetic
and only 32% were non-diabetic. Individual coronaries
involved were left anterior descending (LAD): 943 (63%), right
coronary artery (RCA): 614 (43%), left circumflex (LCx): 507
(36%), diagonal and obtuse marginal (OM): 268 (18%) each,
posterior descending arteruy (PDA): 57 (4%) and left main
coronary artery (LMCA): 48 (3 %). LAD was the commonest
vessel involved. TVD was significantly common in diabetics.
LMCA disease involvement in diabetics was common when
compared with non-diabetics i.e. 59% in diabetics.
short-term outcome in thrombolyzed STEMI patients.
Parameter
Group A (n=131)
Group B (n=122)
Age (years)
Males
Hypertension
Cholesterol (mg/dl)(mean)
Diabetes
Current smokers
Killip class > I
Mortality
Recurrent ischemia
Stroke
Life threatening arrhythmia
Cardiogenic shock
Revascularization
Heart failure
Major bleeding
57.06±11.0
96 (73.28%)
68 (51.90%)
179
37 (28.24%)
22 (16.79%)
45 (34.35%)
12 ( 9.16%)
3 (2.29%)
2 (1.52%)
12 (9.16%)
13 (9.92%)
6 (4.58%)
18 (13.74%)
2 (1.52%)
55.6±10.2
98 (80.32%)
59 (48.36%)
176
37 (30.32%)
15 (12.30%)*
50 (40.98%)*
7 (5.73%)*
4 (3.27%)
1 (0.81%)
8 (6.55%)
7 (5.73%)*
6 (4.91%)
11 (9.01%)*
5 (4.09%)*
*p<0.05; Group A loading dose: 300 mg, Group B loading dose: 600 mg
Aspirin versus Clopidogrel plus Aspirin in
Patients with ST Elevation Myocardial
Infarction Treated with Thrombolytic
Therapy
A Comparison of Two Loading Dose
Strategies of Clopidogrel in Thrombolyzed
Patients of ST Elevation Myocardial
Infarction
39
Sudhir Varma, Harpreet Singh, Madanjit Singh,
Tapan Ghoshe, Arun Chopra, Balbir Singh, Upendra Kaul
Sadbhavna Medical and Heart Institute, Patiala
Clopidogrel, a thienopyridine adenosine diphosphate (ADP)
platelet receptor blocker, is in focus for its concomitant use with
thrombolytics in ST elevation myocardial infarction (STEMI)
and with encouraging results. This study evaluated two
loading dose strategies (Group A: 300 mg, Group B: 600 mg)
of clopidogrel in STEMI. Consecutive eligible patients admitted
and thrombolyzed in our CCU, from January 2003 onward
were included. These two subsets (Group A, n=131) and
(Group B, n=122) were studied for demographic profile, risk
factors and 30-day outcome. Both groups also received usual
drugs post-thrombolysis including aspirin, nitrates, betablockers, angiotesin-converting enzyme (ACE) inhibitors,
calcium blockers, anticoagulants etc. There were more current
smokers (16.8 % v. 12.3%) in group A and more patients in
Killip class > I in Group B (34.3 % v. 41.0%). In Group B, there
was significantly lower mortality (9.1% v. 5.7%, p<0.01) in
patients receiving higher loading lose of clopidogrel, fewer
events of cardiogenic shock (9.9% v. 5.7%) and heart failure
(13.7% v. 9.0 %) and more major bleeding episodes (4.1%).
Clopidogrel in higher loading dose may favorably alter the
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40
VV Radhakrishnan, Mathew Iype, K Sivaprasad,
P Nini Gupta, A George Koshy, S Tennyson, K Suresh,
CG Bahuleyan
Medical College Hospital, Thiruvananthapurum
This study was conducted to assess whether the addition
of clopidogrel to aspirin in patients with acute STEMI treated
with thrombolytic therapy reduce the incidence of primary
end points like death, re-infarction, recurrent ischemia, need
for target vessel revascularization (TVR) and bleeding
manifestations. This a randomized open labeled case controlstudy. Patients admitted to intensive coronary care unit (ICCU)
with acute STEMI were randomized to aspirin (Group A) or
aspirin plus 300 mg of clopidogrel followed by 75 mg of
clopidogrel (Group B) before thrombolytic therapy with
streptokinase. These patients were followed for in-hospital
events like death, re-infarction, recurrent ischemic events,
need for TVR and for safety aspects of bleeding manifestation.
At one month, these patients were assessed for incidence of
secondary end points like death, myocardial infarction (MI),
recurrent ischemic events and need for revascularization. A
total of 80 patients were enrolled in this study. In Group A,
out of 38 patients, 29 (76%) were males and 9 (24%) females.
In Group B, out of 42 patients 35 (83%) were males and 7
(17%) females. The mean age in Group A was 56 years and in
Group B, 55 years. 23 patients in Group A (60%) had anterior
wall myocardial infarction (AWMI) and 15 (40%) had nonAWMI, whereas in Group B, 20 (47%) had AWMI and 22
(53%) had non-AWMI
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Risk factor profile
Group
A
B
HTN
16
18
DM
9
14
Dyslipidemia Smoking
31
26
38
30
PVD
O
4
Post-menopausal
9
7
Primary end points
Group
Death
Re-infarction
A
B
3 (7.8%) 3 (7.9%)
0
1 (2.3%)
Recurrent
ischemia
10 (26.3%)
0
Need for TVR
Bleeding
2
1
0
2 (4.7%)
up, there was a further decline in Killips class and EF in those
having NT-proBNP above median, and clinical outcomes
(recurrent ischemia, heart failure and repeat hospitalization)
were worse in this group (p<0.05). Thus NT-proBNP emerged
as a strong prognostic tool across the spectrum of acute MI
and had the strong predictive value for short-term adverse
outcomes even among patients presenting with preserved LV
functions as assessed by EF.
HTN: hypertension; DM: diabetes mellitus; PVD: peripheral vascular
disease; TVR: target vessel revascularization
One month follow-up data was available for 25 patients of
which 1 patient in group A had recurrent ischemic events. This
study shows that the addition of loading dose of clopidogrel.
Multi Markers Approach for Risk
Stratification of Patients with Acute
Coronary Syndromes
42
Aniket Puri, Amit Jain, Nishant Gupta, Sandeep Kumar,
SK Dwivedi, VS Narian, RK Saran, VK Puri
NT-ProBNP Predicts Adverse Outcomes in
Acute Myocardial Infarction Even with
Preserved Ejection Fraction
41
A Puri, SK Dwivedi, VS Narain, RK Saran, VK Puri
Risk stratification of patients with acute myocardial
infarction (MI) is based on clinical evaluation,
electrocardiogram (ECG), biochemical markers and various
risk assessment scores. There is emerging evidence that Nterminal probrain natriuretic peptide (NT-proBNP) possess
several characterstics of an ideal biomarker. In this study we
looked into the role of NT-proBNP in risk stratification and
prediction of short-term events including mortality in patients
presenting with acute MI and having preserved left ventricular
(LV) functions as assessed by ejection fraction (EF) on
echocardiography. A total of 100 consecutive patients
admitted with a diagnosis of acute ST elevation myocardial
infarction (STEMI) were enrolled. Serum NT-proBNP was
measured using electrochemiluminiscence assay (Roche
Diagnostics) on the Elecsys 2010 system. On two-dimensional
(2D) echocardiography, modified Simpson's technique was
used to measure the EF and 42 patients were found to have EF
>50% (22 with anterior MI and 20 with inferior MI). Other
demographic variables, echocardiography parameters and risk
scores were also assessed. Follow-up at day 30 included a 2D
echocardiography evaluation and assessment for worsening
heart failure, recurrent ischemia, and repeat hospitalization.
Death due to cardiovascular cause by 30 days was also noted.
The mean value of NT-proBNP for the whole cohort was
2307±2287 pg/ml. For those having EF>50%, mean NTproBNP was 1542.38±4649.12 pg/ml. For the purpose of
comparative analysis the median value was determined (907.5
pg/ml). In patients having NT-proBNP above median the Killip
class was higher 1.62 ±0.21 versus 1, the TIMI acute MI scores
were worse 4.77±1.56 versus 2.71±1.11 while EF was similar
59.72±8.8% versus 58.76±6.9% (p>0.05) At 30 days follow-
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In patients with acute coronary syndromes (ACS),
troponin-T (TnT), high sensitive C-reactive protein (hsCRP),
and B-type natriuretic peptide (NT-proBNP) each predict
adverse cardiac events. In the West, it has also been seen that
a multi marker approach incorporating all these three markers
is beneficial in proper risk assessment in patients of ACS, but
little is known, about the utility of these biomarkers in
combination in the Indian population, who have a different
demographic and risk profile. We studied 72 patients of ACS,
who had survived the first two days of hospitalization at our
centre. Baseline estimation of TnT, hsCRP, and NT-proBNP
were done in all the patients apart from the routine biochemical
and a detailed echocardiographic study of regional wall motion
abnormality (RWMA) score and ejection fraction (EF)
calculated by modified Simpson's method. TnT estimation was
done by electrochemiluminescence's immunoassay technique
while hsCRP estimation was done by turbidimetric
immunoassay using the QUANTIA hsCRP reagent kit. NT-pro
BNP was measured on all fasting samples using the Elecsys
2010 on pro BNP electrochemiluminesence's sandwich assay
kit, provided by Roche. Of the total 72 patients, 58 had nonST elevation myocardial infarction (NSTEMI), while 14 had
unstable angina (USA). In the NSTEMI group, 34 patients had
an elevation of all the three biomarkers, while 18 and 6 in
this group had an elevation of two and single biomarkers,
respectively. Out of 14 patients in the USA group, 10 had
elevated NT-proBNP and hsCRP both, while 4 patients had an
elevation in either of the two. When all the patients were
categorized according to the elevation in the number of
biomarkers, it was seen that end-systolic volume was higher
while EF and deceleration time were significantly lower
(p<0.01) in the patients having elevation of all the three
biomakers. The RWMA score also showed similar and
significant co-relation (p<0.01) with an increase in the
number of biomarkers. There was an increased incidence of
recurrent ischemia, myocardial infarction, and congestive
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Indian Heart J 2005; 57: 381–425
heart failure at 30 days of follow-up in the group having an
elevation of all the three biomarkers. There were 4 deaths in
the 30-day follow-up period. All these 4 deaths occurred in
the NSTEMI group. NT-proBNP in this group had a mean of
6330±3334 pg/ml while hsCRP was 6.2±3.1 mg/dl and TnT
mean was 2.8±1.3 ng/ml. Thus, TnT, hsCRP, and NT-proBNP
each provided unique prognostic information in patients with
ACS. A simple multi marker strategy that categorizes patients
based on the number of elevated biomakers at presentation
allows risk stratification in the Indian population as well.
Profile and Prevalence of Aspirin Resistance
in Patients with Stable Coronary Artery
Disease and in Patients with Established
Coronary Artery Disease on Daily Aspirin
Presenting with Acute Coronary Syndrome
43
Antiplatelet effect of aspirin is not uniform in patients of
coronary artery disease (CAD), resulting in breakthrough
coronary events despite being on this drug. This study was
initiated to prospectively evaluate the prevalence of aspirin
resistance in patients with stable CAD and in patients with
established CAD presenting with acute coronary syndrome
(ACS) despite daily regular aspirin, and further clarify the
clinical predictors of aspirin resistance. Blood sample of 48
patients with stable CAD and 52 patients of known CAD
presenting with ACS who were receiving aspirin (150 mg/
day for>7 days) but no other non-steroidal antiinflammatory/
antiplatelet drugs were analyzed for aspirin resistance by
optical aggregation using adenosine diphosphate (ADP) and
arachidonic acid (AA). Aspirin resistance was defined as a
mean aggregation of > 70% with 10 µmole ADP and mean
aggregation of > 20% with 0.5 mg/ml of AA. Aspirin
semiresponders were defined as meeting one but not both of
the above criteria. In the stable CAD group, 1 (2.09%) patient
was found to have aspirin resistance; 19 (39.58%) semi
responders and 28 (58.33%) were aspirin-responsive. In the
established CAD patients regularly on aspirin presenting with
ACS group, 3 (5.76%) were aspirin-resistant, 25 (48.07%)
were semi responders and 24 (46.17%) were aspirin
responders. There was a trend for females to be semi responsive
(p=0.08). All other parameters tested i.e. age, smoking,
diabetes, hypertension, obesity, lipids, hemoglobin, platelet
count, ejection fraction and concomitant drug intake did not
show any statistically significant difference between
responders and semi-responders of either group. To conclude,
a significant 41.66% patients in stable CAD and 53.88% in
397
Clinical Profile and Follow-up of Patients
with Two-Vessel Coronary Artery Disease Not
Involving Left Anterior Descending Artery
44
S Bijulal, Krishnakumar Nair, JA Tharakan,
VK Ajithkumar, Thomas Titus, KM Krishnamoorthy,
K Remash
Sandeep Kumar, Aniket Puri, Amit Jain, Nishant Gupta,
SK Dwivedi, VS Narain, RS Saran, VK Puri
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known CAD with ACS despite regular daily aspirin showed
inadequate response to aspirin therapy, which could not be
predicted by other clinical predictors for this condition. This
may have clinical and therapeutic implications in the currrent
era of newer antiplatelet drugs.
Sree Chitra Tirunal Institute of Medical Sciences and Technology,
Thiruvananthapuram
We studied the clinical profile, and followed up patients with
two-vessel disease not involving left anterior descending (LAD)
artery. Ninety-eight patients with angiographic diagnosis of
circumflex and right coronary disease between 1997 and
2003 were followed up. Mean age was 54.7 years (range: 35 76 years), 86 patients were males and 12 were females; 35.7%
of patients had diabetes mellitus. 59.2% had systemic
hypertension, 65.3% patients were smokers, 40% patients had
total cholesterol > 180 mg% or low-density lipoprotein (LDL)
>130 mg%, 70% patients had high-density lipoprotein (HDL)
<40 mg%, 84.7% patients were in NYHA functional class II at
the time of angiogram. Seven patients were asymptomatic;
26.5% had stable angina, 17.3% had unstable angina, 63.3%
patients suffered from myocardial infarction (MI); 60.2%
patients had inferior wall MI, 9.2% had lateral wall MI and
5.1% had right ventricular infarction; 49% had positive
exercise stress test, 52% patents had pathological Q wave,
33.7% had T wave inversion in leads without Q waves, 8.2%
patients had left ventricular systolic dysfunction, 50% had
some degree of mitral regurgitation (MR), while 6.1% had
significant MR defined as > grade 3. None required mitral valve
replacement; 40.8% had disease involving proximal
circumflex, 37.8% had distal circumflex disease, 46.9% had
disease of major obtuse marginal. Proximal, mid and distal
right coronary disease was found in 45.9%, 48% and 18.4%
patients, respectively. 40.8% patients had revascularization;
36.7% underwent successful percutaneous coronary
intervention (PCI), 6.1% had coronary artery bypass grafting
(CABG). Revascularization correlated with presence of
circumflex disease, but not with right coronary disease.
Significant MR did not correlate with ventricular dysfunction
and lesion location but with lateral wall infarction. Follow-up
ranged between 1 to 7 years. Five patients had unstable angina
and two had MI during follow-up; 13 patients had repeat
angiogram and 4 patients had instent restenosis. Three
patients developed complete heart block during follow-up
requiring permanent pacemaker implantation.
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Indian Heart J 2005; 57: 381–425
Diagnostic Accuracy of Multi Slice CT
Coronary Angiography in Patients
Presenting with Chest Pain
45
Gaurav Minocha, Poonam Khurana, Simmi Manocha,
Mitu A Minocha, Sameer Shrivastava, Narender Mahajan,
Niraj Gupta, Praveer Agarwal, Sanjay Chugh, Suman
Bhandari, RR Kasliwal, TS Kler, Naresh Trehan
Non-invasive coronary angiograpy with 16-slice multislice
computed tomography (MSCT) has shown potential in
detecting significant coronary stenosis. The aim of this
prospective clinical trial was to assess the diagnostic accuracy
and clinical relevance of MSCT coronary angiography in
patients presenting with acute chest pain. Forty-six patients
(mean age 55±18 years, 91.3% male) presenting to hospital
with acute chest pain, underwent coronary MSCT
angiography followed by a conventional angiography. Patients
with definite acute coronary syndrome, prior coronary artery
bypass grafting (CABG) and patients requiring immediate
catheterization were excluded. Further major exclusion criteria
were atrial fibrillation and renal impairment. Coronary MSCT
was acquired with a 16-slice CT using retrospective
electrocardiographic (ECG) gating. Blinded visual assessment
of coronary MSCT was performed on a 11-segment model after
image quality assessment. The accuracy of coronary MSCT
was compared with conventional coronary angiography (CCA)
to detect significant stenosis (>50%); 46 patients underwent
both MSCT coronary angiography and CCA. Risk factor
analysis revealed 41.3% diabetic, 56.5% hypertensive, 13%
smoker and 43.4% with positive family history of coronary
artery disease (CAD); 32% patients had ≥ 2 major risk factors.
Prevalence of significant CAD was 54.3%; 506 segments were
assessed by MSCT of which 7.1% were non-analyzable. Mean
calcium score was 348.16 and 16.6% patients had coronary
calcification score > 800. The overall ability of coronary MSCT
to detect the presence of significant stenosis in all native
segments had a sensitivity of 80.0% and specificity 98.9%, a
positive predictive value (PPV) 90.9% and negative predictive
value (NPV) of 97.4%, with accuracy of 96.8%. On exclusion
of patients with significant lesion calcification, MSCT had a
sensitivity of 85.3%, specificity of 98.7%, PPV of 89.7% and
NPV of 95.6%. The ability of MSCT to detect the presence of
at least one significant coronary stenosis in all native segments
had a sensitivity of 87.5% and specificity of 100%. In a patient
cohort presenting with chest pain and multiple risk factors,
MSCT is an accurate modality to rule out significant coronary
stenosis.
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A New Subset of Ventricular Septal Rupture
following Acute Myocardial Infarction
46
Rachel Daniel, NP Padmaja, V Ramakrishna Pillai,
Ramesh Natarajan, Shahul Hameed, Dennis Jose Joseph,
John Joseph, G Vijayaraghavan
Kerala Institute of Medical Sciences, Thiruvananthapuram
Ventricular septal rupture (VSR) is a rare (incidence: 1-2%)
but lethal complication following myocardial infarction (MI).
The incidence is less following thrombolytic therapy (0.2%).
Here we report two cases of VSR following percutaneous
transluminal coronary angioplasty (PTCA) and stenting to the
infarct-related artery. The first case involved a 65-year-old
female who was not thrombolyzed following anterior wall MI,
had PTCA and stenting to proximal left anterior descending
(LAD) on day 5 of MI and developed apical muscular VSR 36
hours after the procedure. The second case was of a 56-yearold female who was thrombolyzed for anterior wall MI. PTCA
was done to LAD and was noted to have apical muscular VSR
immediately after PTCA. Although the prognosis of patients
who develop VSR is supposed to be grave without immediate
surgical repair, both of our patients remained
hemodynamically stable at discharge and during follow-up.
The development of VSR following MI in patients who are
revascularized is rare and found to be associated with a
relatively favorable outcome. This subset of patients with VSR
may become more commonly recognized in future.
Impact of Diabetes Mellitus on Outcome of
Patients with Acute Coronary Syndrome
47
Niraj Gupta, Govind Goyal, Pankaj Gupta, Manohar
Shinde, Manish Bansal, Ravi R Kasliwal
Diabetes mellitus is known to have adverse impact on the
clinical course and prognosis of patients presenting with acute
coronary syndrome (ACS). For devising better treatment
strategies for these patients, we retrospectively studied clinical
parameters, treatment given and in-hospital events of diabetics
in ACS. Consecutive patients of ACS (n=600) admitted to our
Institute from January 2005 to March 2005 were enrolled.
In-hospital and discharge management and in-hospital
outcomes data were collected and analyzed. Out of 600
patients, 170 were diabetic at the time of admission and 25
were diagnosed to have diabetes during hospital stay, 195/600
(32.5%) had diabetes mellitus as risk factor. Diabetic patients
were older (mean age 60.2 years v. 56.8 years), more
frequently men (64.6% v. 59.2%). Diabetic patients had
unfavorable clinical presentation compared to non-diabetics,
17.9% were in Killip class III/IV as compared to 9.1% among
non-diabetics. Diabetics were treated less often with betablockers both during hospitalization (66.1% v. 78.0%) and at
discharge (68.2% v. 81.4%). Both in-hospital and at discharge,
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Indian Heart J 2005; 57: 381–425
use of angiotensin-converting enzyme (ACE) inhibitors or
ARBs was more in diabetics (76.9% v. 69.3% and 81.5% v.
71.3%, respectively). In-hospital use of digitalis (9.2% v. 5.1%)
and diuretics (30.2% v. 21.4%) was more in diabetics.
Glycoprotein (Gp) IIb/IIIa inhibitors were also used more
commonly in diabetics (16.4% v. 10.1%). During hospital stay,
diabetics had more recurrent angina (20.5% v. 15%),
deterioration of Killip class (27.6% v. 19.0%) and higher inhospital mortality (8.7% v. 4.6%). Use of Gp IIb/IIIa inhibitors
decreased in-hospital MACE rate more in diabetics than in nondiabetics [relative risk reduction (RRR) 28.3% v. 19.9%)].
Diabetics had more of left main and/or multivessel disease
(29.2% v. 20%) and underwent coronary artery bypass
grafting (CABG) more commonly (42.5% v. 31.8%). Overall
diabetics had longer in-hospital stay with mean duration of
7.1 days versus 5.3 days in non-diabeties. Diabetics have poor
course and prognosis in ACS. If Gp IIb/IIIa inhibitors are
administered in ACS, MACE rate is decreased. So we strongly
recommend use of Gp IIb/IIIa inhibitors in high-risk cases of
ACS.
27 patients who developed adverse cardiac events at 24 hours,
11 had ST resolution of <30% at 120 min (χ 2=2.65,
p=0.1033). Out of 36 patients who had adverse cardiac events
at 1 month, 18 had <30% ST resolution (χ 2=13.33,
p=0.00026) at 120 min. Among 27 patients, 23 had <70%
ST resolution at 120 min <30% (χ2=2, p=0.1569). All the 36
patients had ≤70% ST resolution at 120 min (Fisher’s exact
test, p= 0.04711). All the patients who developed adverse
cardiac events viz. death, MI, recurrent ischemia or heart
failure had ST resolution ≤70% both at 40 min and 120 min.
This study points out that an ECG taken as early as during
thrombolysis i.e, 40 min from the start of streptokinase is a
useful predictor of patients who are at risk of developing
adverse cardiac events. It also helps to predict the need for
rescue angioplasty as early as 40 min during thrombolysis.
Fraxiparine versus Unfractionated Heparin in
49
Unstable Angina or Non-ST Elevation
Biswarup Sarkar, AK Khan, AK Satpati, BK Chatterjee
Calcutta National Medical College and Hospital, Kolkata
STRAS (ST Resolution after Streptokinase)
Study
48
S Vinu Jacob, VV Radhakrishnan, Mathew Iype,
K Sivaprasad, A George Koshy, S Tennyson, K Suresh,
CG Bahuleyan
Medical College, Thiruvananthapuram
The importance of electrocardiography (ECG) in predicting
prognosis as early as 40 min and 120 min from the start of
thrombolysis is not completely understood. This was a
descriptive study conducted in 100 patients with first episode
of acute myocardial infarction (MI) with ST segment elevation
who were admitted in intensive coronary care unit (ICCU)
within the window period. All patients underwent
thrombolytic therapy with streptokinase. Three
electrocardiograms (ECGs) are taken at onset, at 40 min and
at 120 min. ST resolution was calculated. These patients were
followed up at 24 hours and one month. The parameters noted
were death, recurrent ischemia and heart failure.
Echocardiographic evaluation was also done. Adverse cardiac
events were noted in 27 patients at 24 hours and 36 patients
at 1 month. Among the 27 patients, 19 had <30% ST
resolution at 40 min (χ2=0.33, p =0.56698). Among the 36
patients 30 had <30% ST resolution at 40 min (χ2=7.86,
p=0.0050, OR=4.41, confidence limit =1.48 – 13.73). Out
of 27 patients, 26 had ≤70% ST resolution at 40 min (Fisher’s
exact test, p=0.6706). Among 36 patients, all had ≤ 70% ST
resolution at 40 min (Fisher’s exact test, p=0.04711). Among
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This study aimed to assess the benefit of short-term low
molecular weight heparin, fraxiparine compared with
unfractionated heparin (UFH) in unstable angina (UA) or nonST elevation myocardial infarction (NSTEMI). It was a
prospective, randomized study conducted between December
2004 and June 2005. A total of 150 patients of UA or NSTEMI
were enrolled in the study. They were randomized to receive
fraxiparine or UFH. The UFH group received an intravenous
bolus of UFH 5000 IU followed by an activated partial
thromboplastin time (APTT)-adjusted infusion of UFH for 5
days. The fraxiparine group received 0.6 ml subcutaneously
twice daily for 5 days (5700 anti-Xa activity). Primary end
point [composite of death and non-fatal myocardial infarction
(MI)] was assessed at the end of 30 days after randomization.
The secondary end point was composite of all-cause mortality,
non-fatal MI, stroke or recurrent ischemia, urgent target vessel
revascularization. Primary outcome occurred in 17.5% (14/
80) patients assigned to fraxiparine group and 18.5% (13/70)
of patients assigned to UFH group. No statistically significant
differences were observed (p=0.24). Furthermore there were
no statistically significant inter group differences (fraxiparine:
23% v. UFH: 24.2% at 30 days, p=0.50) regarding secondary
outcome. No increased risk of bleeding was observed in
fraxiparine group. Treatment with fraxiparine provides efficacy
and safety similar to treatment with UFH, for same period in
the management of UA or NSTEMI. One added advantage is
that we do not need APTT measurement during fraxiparine
treatment.
11/24/2005, 10:45 AM
Indian Heart J 2005; 57: 381–425
N-Terminal Pro-Brain Natriuretic Peptide as
Prognostic Marker in Acute Coronary
Syndrome
50
Biswarup Sarkar, AK Khan, AK Satpati, BK Chatterjee
This study aimed to assess the prognostic significance of
N-terminal probrain natriuretic peptide (BNP) in patients with
acute coronary syndrome (ACS). We measured N-terminal
proBNP in plasma specimen of 96 patients who were admitted
in our intensive coronary care unit (ICCU) from Sepember
2004 to June 2005 with ACS) [excluding patients with ST
elevation myocardial infarction (STEMI)]. N- terminal proBNP
was measured at the time of admission along with CK-MB and
troponin-T (TnT) and after 45 hours. The end point was
composite of death, myocardial infarction (MI), recurrent
angina, left ventricular failure (LVF), urgent revascularization
assessed at the end of 30 days. There were 64 males and 32
females. Mean age was 62.20 years. Diabetes melitus was
present in 32 patients and hypertension was present in 40
patients. N terminal proBNP> 300 pg/ml was associated with
increase in composite end points (66% v. 5.5%, p=0.001). The
influence of N-terminal proBNP on composite end points was
independent of other factors. We conclude that measurement
of N-terminal Pro-BNP in ACS [unstable angina (UA)/nonSTEMI] has significant prognostic value.
Effect of Nebivolol on Exercise Testing and
Effort Tolerance in Patients with Chronic
Stable Angina
51
Vinod Thomas, Krishnakumar Nair, JM Tharakan,
VK Ajithkumar, Thomas Titus, T Anees, K Remash,
D Pradeepkumar
Thiruvananthapuram
The aim of the study was to evaluate the clinical efficacy
and safety of the beta-blocker nebivolol in chronic stable
angina. Patients with chronic stable angina were evaluated
clinically and by exercise stress testing with tread mill test
(Bruce protocol) basally and after six weeks of treatment with
nebivolol 5 mg daily. Out of 27 patients evaluated (mean age
52.56±7.5 years), 21 (77.8%) were males. There was no
significant change in NYHA functional class. The basal
walking distance was 1.86±0.9 km which increased
significantly to 2.38± 0.79 km following 6 weeks of nebivolol
(p = 0.0001). The basal exercise time of 7.8±1.9 min increased
to 8.7±1.5 min (p= 0.001). Total metabolic equivalents
(METS) basally was 9.25±1.9 METS which increased to
10.05±1.4 METS (p=0.002). The time to ST segment
depression was not statistically altered by nebivolol intake (pre:
5.1±3.1 min, post: 5±4.06 min, p=0.89). The maximum ST
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400
segment depression in any lead during exercise tolerance test
decreased from 0.95±0.9 to 0.73±0.72 with p value nearing
significance (0.075). The total number of leads showing ST
segment depression decreased from 3.37±2.34 to 2.6±2.04
with p value nearing significance (0.65). The Duke's score
increased from 3.5±5.5 to 5.1±4.5 (p=0.002). The ratepressure product was 22216±5642 post-nebivolol which was
significantly lower than the basal rate-pressure product of
24851±6465 (p=0.002) despite significant increase in
exercise time and metabolic equivalents achieved. The time to
offset ST segment depression in the recovery phase was also
significantly lesser post-nebivolol (pre: 3.59±3.2, post:
2.34±2.83, p=0.038). No patient had any significant side
effects. It may be concluded that in patients with chronic stable
angina, treatment with nebivolol over a short period helps to
improve effort tolerance with a lesser increase in rate-pressure
product. It also improves the Duke’s score which correlates
with the ischemic burden. The drug has no significant shortterm adverse effects.
Prognostic Value of Myocardial Performance
Index in Unstable Angina
52
S Garg, RS Joshi, S Banerjee, J Naik
Kolkata
Assessment of global myocardial performance index (MPI)
has been suggested as an appealing parameter to assess systolic
and diastolic left ventricular (LV) function. We sought to test
the prognostic value of MPI in comparison to other
biochemical parameters in patients with unstable angina. 315
consecutive patients with unstable angina were assessed
within 24 hours of hospital admission. Doppler
echocardiographic measures of systolic, diastolic and global
myocardial performance were assessed. In addition ST
changes, left ventricular ejection fraction (LVEF), C-reactive
protein (CRP), troponion-T (TnT), along with clinical
characteristics were assessed. This was followed by coronary
angiography. The end point of the study at 7 days was
recurrent angina, infarction, heart failure and severity of
coronary artery disease (CAD) on angiography. Multivariate
analysis identified age (OR 1.02, CI 1.03 to 1.64), ST changes
(OR, 3.80, CI 2.45-3.1) TnT (OR 2.19, CI 1.45-1.30) and MPI
(OR 2.11, CI 6.18-6.40) as independent predictor of adverse
events. MPI along with TnT, ST changes and CRP is indicator
of poor prognosis in patients with unstable angina.
11/24/2005, 10:45 AM
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Relationship Between Smoking and Coronary
53
Plaque Morphology in Patients with Acute
Myocardial Infarction after Failed
Thrombolysis : An Angioscopic Study
Binayak Deb, Peter Crean, Michael Walsh
Kolkata and St James’ Hospital, Dublin, Ireland
The aim of this study was to observe the coronary plaque
morphology in patients with acute myocardial infarction (MI)
who had failed thrombolysis, and if a relationship existed
between the plaque morphology and smoking status in these
groups of patients. A total of 254 patients with acute MI
received thrombolysis between October 1991 and June 1992.
39/254 (15%) patients had failed thrombolysis. The definition
for failed thrombolysis being, recurrent chest pain and/or
persistent ST elevation on the electrocardiogram (ECG). This
subset of patients were subjected to coronary angioscopy, prior
to urgent coronary angiogram and further revascularization
process. Smoking status of this group of patients were
recorded. The results were analyzed by logistical regression
analysis. Angioscopic findings: 74% (29/39) patients had
white thrombus, 17% (7/39) patients had mixed thrombus
and 9% (3/39) patients had red thrombus. The analysis of
smoking status in patients having failed thrombolysis revealed
that 84% (33/39) patients were smokers while 16% (6/39)
were non-smokers. The white thrombus group had 19 smokers
compared to 2 non-smokers. The mixed thrombus group had
13 smokers compared to 2 non-smokers. The red thrombus
group had 1 smoker compared to 2 non-smokers. Smokers had
predominantly white thrombus or combination type. The odds
ratio were 0.39 for smokers (95% CI 0.28 - 0.52). This study
shows that smokers who suffer acute MI have a greater relative
risk (RR) of having platelet-rich white thrombus. This could
be one of the reasons for failed thrombolysis, as the routine
thrombolytic agents which are used are predominantly
fibrinolytic, i.e. having ability to dissolve fibrin-rich red
thrombus.
Radial Artery as a Route for Diagnostic
Coronary Angiography
54
S Banerjee, BP Chatterjee, D Roy, P Sahoo
Kolkata
Fifty-eight consecutive patients underwent transradial
coronary angiography; their mean age was 58±2.5 years and
maximum age 78 years. In two patients, radial artery could
A.p65
401
not be accessed (unsuccessful puncture in one case and
inadequate flow in the other case). Eight patients had morbid
obesity. In one case, occlusion in radial artery in mid forearm
(confirmed by antegrade injection) was noted. 5 F diagnostic
sheath was used in all cases. Single 5 F Tiger catheter (Terumo
Inc.) was used for both left and right coronary artery
cannulation in 52 cases. LV angiography was done with 5 F
pigtail catheter (as Tiger catheter produced myocardial
staining). For right coronary artery (RCA) cannulation,
separate catheter was used in 6 patients (Multipurpose-3, AL
1-2, AL 2-1). Mean fluoroscopy time was 8.65± 1.8 min (2
min higher than transfemoral route). The maximum amount
of dye used was 90 ml. Transient burning sensation was
observed during injection of pre-medication. Three patients
developed hypotension during procedure, which normalized
after infusion of volume (nitroglycerine injection-induced).
Three patients had left main (LM) equivalent disease. Transient
disappearance of radial artery pulsation (<10 hours) was
noted in 4 cases. On interrogation, 5 patients complained of
mild discomfort over forearm. No other side effect was noted
in these cases. The remaining 6 patients were discharged on
the same day. To summarize, transradial coronary artery
angiogram is feasible in most of the patients. Early hospital
discharge and minimum local complication are important
advantages over the transfemoral route.
A Study of Ferminal Vector (Vector III) in
55
M Subair, Solly, Ajith, Sajan, Tennyson
Study of vector III (basal ventricular activation forces) in
coronary artery disease (CAD) is scantily reported in literature.
We undertook a comparative study of the vector III in 100
subjects each of normal adult population, anterior wall
myocardial infarction (AWMI) and inferior wall myocardial
infarction (IWMI). The representative deflections for vector III
were selected from V 6 , V 5, V 1, aVR and L1 in surface
electrocardiogram (ECG). Patients with conduction
abnormalities (bundle branch block, fascicular block),
abnormal axis, posterior wall myocardial infarction and
extensive AWMI (changes up to V6) were excluded. Overall, the
infarction patients have significant absence of vector III than
control population (59% v. 22%). Among infarction, the loss
of vector III forces were more common in acute IWMI
compared to AWMI (69%, v. 48%). A sub group analysis of
acute IWMI showed that loss of vector III is associated more
with right ventricular myocardial infarction compared to
isolated IWMI (75% v. 65%).
11/24/2005, 10:45 AM
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Safety and Efficacy of Re-use of Streptokinase
56
C Arumugam, V Jaganathan, R Alagesan, M Annamalai,
S Shanmugasundaram, Geetha Subramaniam,
A Balaguru, S Venkatesan, G Gnanavelu
Streptokinase is the most commonly used fibrinolytic agent
in patients with ST elevation myocardial infarction (STEMI)
in India. Streptokinase re-use between 5 days to two years of
its prior use is considered as relative contraindication because
of its uncertain efficacy and risk of allergy. Management of
re-infarction in patients who have received SK in the recent
past is an important clinical problem in our country. It requires
treatment with other fibrinolytic agents or percutaneous
coronary intervention (PCI) which is not available in most
parts of India. The effectiveness of fibrinolysis was assessed by
standard electrocardiographic (ECG) criteria. 26 consecutive
patients with STEMI eligible for thrombolysis but who had prior
SK use were taken up for the study. None had allergy during
prior administration (Group 1). 240 patients with STEMI who
received streptokinase for the first time were considered as
controls (Group 2). All the patients were closely observed for
adverse reactions (fever, itching, rash, bronchospasm,
angiographic edema, hypotension, anaphylaxis, serum
sickness). The results are summarized in the table.
Age (years)
Males
Females
Window period (hours)
Successful
thrombolysis
Complications:
Hypotension
Itching & rash
Anaphylaxis
Interval between
thrombolysis
Group 1
(n=26)
Group 2
(n=240)
p value
56.8 (35 – 62)
24 (92.3%)
2 (7.7%)
7.4 (1.5 – 10)
18 (73%
54.2 (27 – 65)
190 (79.2%)
50 (20.8%)
7.2 (2 = 12)
172 (71%)
NS
NS
2 (7.7%)
1 (3.8%)
0
20 (.3%)
4 (1.7%)
0
NS
NS
NS
122 (8 - 630 days)
-
-
Minor allergy in the form of itching and rash developed in few
patients which was managed with antihistaminics and
steroids. No patient developed anaphylaxis. We conclude that
streptokinase can be readministered safely without reduction
in its efficacy.
pressure and hypotension. It is a commonly encountered
clinical phenomenon. Its characteristics, however, are poorly
defined and its mechanisms are not known. Immunological/
allergic reasons have been proposed to explain the
phenomenon, but hemodynamic factors could also play a
potential role in the same. The objective of this study was to
study the arterial blood pressure behavior during fibrinolytic
therapy with intravenous (IV) streptokinase in patients with
acute MI and assess its clinical significance. There were 75
consecutive patients with confirmed acute MI eligible for
fibrinolytic therapy. IV infusion of 1.5 million units of
streptokinase in 100 ml of normal saline over 60 min was the
regimen used for fibrinolysis. Blood pressure (BP) monitoring
and recording was done with automated non-invasive BP cuff
system. Systolic BP recorded 10 min before infusion was taken
as baseline value. Fall in BP was defined as reduction in systolic
BP during infusion >15% when compared to baseline value.
Hypotension was defined as an absolute fall in systolic blood
pressure to < 90 mmHg during infusion. In the study sample
47% of patients had inferior wall (IW)/posterior wall (PW)/
lateral wall (LW)+ right ventricular myocardial infarction
(RVMI) (n=35) and 53 % had anterior wall myocardial
infarction (AWMI) (n=40). Fall in systolic BP was noted in 30%
patients (n=22), 36.6±19.6 mmHg (range :12-98 mmHg)
(p<0.01). Lowest value was recorded at 30.6±12.3 min. There
was an accompanying fall in diastolic BP of 22.8±13.9 mmHg
(range: 6-67 mmHg) (p<0.01). 24% patients (n=18) had a
(transient fall in BP. Four (5%) patients had hypotension
requiring temporary stopping of infusion and pressor support.
Of the 29% of patients with defined fall in BP, 86% (n=19)
had IW/PW/LW+RVMI and the rest 14% (n=3) had AWMI,
(p<0.01). There was no statistically significant correlation
between demographic profile, time of presentation and inhospital morbidity/mortality with fall in BP during fibrinolytic
therapy. In our study fall in BP and hypotension during
fibrinolytic therapy was primarily confined to patients (86%)
who had IWMI. We believe, streptokinase per se may not
contribute to the fall in BP during fibrinolytic therapy. It
probably represents an exaggerated Bezold-Jarisch
phenomenon.
Control of Diabetes Mellitus and
Thrombolysis Outcome
Hypotension with Streptokinase—Myth or
Reality
57
Mohamed Muthiullah, V Jaganathan, R Alagesan,
M Annamalai, S Shanmugasundaram, Geetha
Subramaniam, A Balaguru, S Venkatesan, MA Rajasekar,
D Muthukumar, G Ravishankar, C Balasubramaniam
Fibrinolytic therapy with streptokinase in acute myocardial
infarction (MI) is commonly associated with fall in blood
A.p65
402
58
SS Khaja Rafeeq, V Jaganathan, R Alagesan,
M Annamalai, S Shunmugasundram, Geetha
Subramanian, A Balaguru, G Palanisamy, AS Arul,
G Ravishankar, C Balasubramanian
Patients with hyperglycemia have an adverse prognosis
after ST elevation myocardial infarction (STEMI).
Hyperglycemia reduces myocardial reperfusion during
primary percutaneous coronary intervention (PCI) for STEMI.
11/24/2005, 10:45 AM
Indian Heart J 2005; 57: 381–425
Our aim in this study was to find out the outcome of
thrombolysis in relation to the glycemic control. Clinical,
biochemical and echocardiography data of diabetic patients
with acute anterior wall STEMI (n=20) and diabetic patients
with acute inferior wall STEMI (n=20) thrombolyzed with
streptokinase in our referral teaching institute were
prospectively collected for the study. The study population was
matched for age, gender, time of presentation and other risk
factors. The control of diabetes was assessed by glycated
hemoglobin levels. The success of thrombolysis was assessed
clinically and by electrocardiographic criteria as adopted by
ACC/AHA guidelines. Thrombolytic therapy was successful in
22 patients [anterial wall myocardial infarction (AWMI) :10,
inferior wall myocardial infarction (IWMI):12]. Successful
thrombolysis correlated well with glycemic control. [HbA1c
<6 % - successful thrombolysis, Hb A1c 6-10% - partial
success, HbA1c > 10% - failed thrombolysis). To conclude,
diabetic patients with good glycemic control had successful
thrombolysis, compared to diabetic patients with poor glycemic
control.
Prevalance of Syndrome X in Patients of
Acute Coronary Syndrome
59
A Lalchandani, P Neelam, G Preethi, SK Saxena, P Sondhi,
NN Khanna, M Shameem, A Agarwal, V Agarwal, U Pandey
GSVM Medical College, Kanpur
Diabetes mellitus is an equivalent of coronary heart disease
(CHD). Diabetic patients often have abnormal lipid profilediabetic dyslipidemia. Hypertension frequently accompanies
it. This study analyzed the prevalence of the triad of
hypertension, diabetes and dyslipidemia in patients with acute
coronary syndrome (ACS) in Kanpur. We studied 300 patients
with acute coronary syndrome presenting at our hospitals. All
patients had a fasting lipid profile and blood sugar estimation.
Dyslipidemia was present if trilglyceride level was > 150 mg/
dl or high density lipoprotein-cholesterol (HDL-c) was < 40
mg/dl in male or <50 mg/dl in females. In our study, of 300
patients with acute coronary syndrome, 22% patients were
diabetic, 33% patients were hypertensive and 38% cases were
dyslipidemic. Triad of hypertension, diabetes and dyslipidemia
was present in 10% patients. Since the etiology of CHD is
multifactorial, the approach to prevention should also be
multifactorial, aimed at modifying the above risk factors which
have a very high association with CHD (10% prevalence of
the triad in this study group). Primordial prevention by
modifying lifestyle and eating patterns can achieve substantial
reduction in the incidence of coronary heart disease.
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403
Reciprocal ST Elevation in Unstable Angina
S Venkatesan, G Gnanavelu, V Jaganathan
60
Even after 100 years of electrocardiography (ECG), the
electrophysiological mechanism of ST elevation in myocardial
infarction (STEMI) and ST depression in unstable angina (UA)
is still in the hypothetical stages. One popular theory says that
the current of injury we see as ST segment elevation in surface
ECG is actually an illusion. It is apparently due to constant
negative current pushing down the rest of ECG segments.
While conflicts continue to confront the basic electrophysiological concepts in the genesis of primary ST segment
elevation, paradoxically the concept of reciprocal ST
depression in patients with STEMI is considered a settled issue.
We hypothesized that if ST depression occurs as a response to
ST elevation it is logical to expect strong ST depressive forces
should possibly elevate the ST segments in the reciprocal leads.
In fact we have seen this phenomenon in three distinct clinical
situations. (i) ST elevation in posterior leads: Patients who present
with ST depression in V1, V2, V3 and ST elevation in posterior
chest leads V8-V10. These patients were initially thought to have
isolated posterior myocardial infarction (MI), later the cardiac
enzymes were found to be normal indicating no myocardial
necrosis. Echocardiographic evaluation revealed wall motion
defects in anterior segments rather than in posterior segments.
Coronary angiography (CAG) revealed critical left anterior
descending (LAD) disease. This we believe is a pure reciprocal
ST elevation in the posterior leads to ST depressive forces in
anterior leads. (ii) Inferior ST elevation with ST depression in
V4-V6: Few patients who presented like inferior STEMI failed to
evolve into inferior Q MI but as lateral non-STEMI (NSTEMI).
The initial ST elevation in inferior leads was transient and
disappeared much earlier, while the ST depression in lateral
leads persisted. This probably indicates, the ST elevation in
inferior leads as a secondary reponse. (iii) ST elevation in aVR
in high risk unstable angina: As reported in the literature, we
have also seen ST elevation in aVR in patients with high risk
UA. This was more often observed when there is >3 mm ST
depression in V4-V6. The aVR ST elevation possibly represents
the reciprocal response. We conclude, ST elevation in certain
specific lead in some patients with UA could be a pure reciprocal
electrical phenomenon to dominant ST depressive forces in
opposite leads. Hence we believe ST elevation in the surface
ECG during early hours of acute coronary syndrome should
be interpreted more cautiously. The sanctity associated with
ST segment elevation needs further scrutiny.
11/24/2005, 10:45 AM
Indian Heart J 2005; 57: 381–425
Does Right Ventricular Infarction Ever Get
Old? An Elusive Search for Q Waves in V4R
61
S Venkatesan, G Gnanavelu, V Jaganathan,
R Alagesan, M Annamalai, S Shanmugasundaram,
S Geetha, A Balagure, G Anuradha
Acute myorcardial infaction (MI) has 7-10% in-hospital
mortality. Progressive negative remodeling of left ventricular
(LV) accounts for further significant morbidity and mortality
at 1 year. Inferior MI, if associated with right ventricular (RV)
myocardial infarction (MI) has adverse outcome. There is little
data on long-term effects of RVMI on RV function. Typically,
ST elevation myocardial infarction (STEMI) involving the LV
(LV MI) evolves with Q waves. It is not clear whether RVMI
behavior is different from LVMI. There is little data regarding
the evolution pattern of the electrocardiogram (ECG) in RVMI.
In this context we analyzed the lead V4R for appearance of Q
waves in patients with the RVMI. The study population
consisted of 36 patients with inferior wall (IW) MI and RVMI.
It was a retrospective observational study. All were documented
to have classical IWMI and RVMI by standard criteria. The
mean age was 45 years (range: 28-74 years). Male-female ratio
was 4:1. All received thrombolysis. ECG and echocardiographic
analysis were done on admission, at 1 month and at 6 months.
RV wall motion defects were looked in during the follow-up.
RVMI was said to be present if at least one of the following was
present: hypokinetic RV free wall, diaphragmatic surface, or
apex. The ECG, echocardiographic features are reported.
On admission
Q 23/aVF
ST ↑ V4R
Q in V4R
RV dimension
(long axis) mm
7/36 (19%)
36/36 (100%)
2/36 (5%)
At 24 hours
24/36 (66%)
10/36 (27%)
4/36(11%)
1 month
34/36 (94%)
1/36(2.7%)
0/36(0%)
6 months
28/36 (78%)
0/36(0%)
0/36(0%)
28 (26-42)
28 (24-42)
26 (22-32)
26 (24-32)
RV wall
motion defect
-
7/16 (19%)
2/36 (5%)
0/36(0%)
None of the 36 patients in our study developed Q waves in V4R
following RVMI at 6 months. No residual wall motion
abnormality was detected in any of the patients during followup. It is concluded that RVMI does not evolve with Q waves
unlike LVMI. Progressive RV dysfunction and adverse RV
remodeling following RVMI could be a very rare or non-existent
phenomenon.
Metabolic Syndrome and Markers of
Subclinical Atherosclerosis as Predictors of
62
and vascular elasticity have recently emerged as markers for
identification of individuals who are at high risk of having
cardiovascular (CV) disease. The present study was conducted
to assess their relative importance in prediction of coronary
artery disease (CAD). 165 individuals seeking outpatient
cardiac consultation for various indications were included; 42
of these (25.45%) had documented CAD. All patients
underwent evaluation for presence of various conventional CV
risk factors, presence of MS and assessment of CIMT, BaFMD
and small vessel elasticity (SVE) (measured using automated
instrument- CV Profilor®). CIMT (common carotid IMT) and
BaFMD were measured using 7.5 MHz linear, phased array
transducer attached to Sonos 7500 ultrasound machine. 60
(36.36%) patients were found to be having MS (ATP III
criteria). CAD patients had significantly higher prevalence of
male gender (90.5% v. 76.4%; p=0.049), diabetes mellitus
(40.5% v. 24.2%; p=0.044), smoking (42.9% v. 25%;
p=0.029) and MS (50% v. 31.7%; p=0.033) and had
significantly lower levels of HDL (38.89±9.3 v. 43.72±9.3 mg/
dl; p=0.008), LDL (96.38±37.1 v. 120.20±36.7 mg/dl;
p=0.001), and total cholesterol (168.06±57.8 v. 195.98
±49.7 mg/dl; p=0.006) possibly the effect of lipid lowering
therapy. CIMT was significantly increased (0.796±0.16 v.
0.711±0.16 mm; p=0.003) and BaFMD significantly impaired
(6.54±3.13 v. 11.19±5.99%; p <0.001) in patients with CAD.
SVE was not different in the two groups (5.34±2.9 v.
5.199±2.5 ml/mmHg×100; p=0.791). There was significant
inverse correlation between CIMT and BaFMD (Pearson’s
correlation coefficient : 0.436, p <0.001).
Variable
Constant
Male gender
Diabetes mellitus
Smoking
Total cholesterol
HDL-cholesterol
LDL-cholesterol
Metabolic syndrome
CIMT
BaFMD
β
-0.026
0.020
0.171
0.033
-0.081
-0.283
0.033
0.133
-0.266
Metabolic syndrome (MS), carotid intima-media thickness
(CIMT), brachial artery flow-mediated vasodilation (BaFMD)
404
p value
0.035
0.811
0.851
0.090
0.902
0.560
0.257
0.778
0.210
0.011
On multivariate analysis, only BaFMD was found to be an
independent predictor of CAD. CIMT proved to be an
independent predictor only when BaFMD was not included in
the analysis. Endothelial dysfunction, as assessed by BaFMD,
appears to be the most important independent predictor of
CAD. CIMT has significant inverse correlation with BaFMD but
does not have independent predictive value when simultaneous
BaFMD is being performed. Presence of MS and SVE do not
have independent predictive value over BaFMD and CIMT.
RR Kasliwal, S Agrawal, M Bansal
A.p65
t
2.138
-0.240
0.189
1.711
0.123
-0.585
-1.140
0.283
1.262
-2.604
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Indian Heart J 2005; 57: 381–425
Metabolic Syndrome Predicts Coronary
Artery Disease Better and Earlier than
Diabetes
63
R Ajay Kumar, S Thanikachalam, B’joe Baben,
Hari Prasad Chegu
The Kuopio Heart Disease Risk Factor Study, after studying
over 1200 men from Finland, found that those who had
metabolic syndrome (MS) have 3 to 4 times higher mortality
from cardiovascular disease during the follow-up period than
those who did not have MS. MS is now widely defined using
the criteria given by the Adult Treatment Panel III (ATP III) of
the National Cholesterol Education Program (NCEP). Insulin
resistance (IR) is the common pathogenic factor for the
individual components of the MS, and explains the trait cluster.
This study sought to assess the prevalence of MS and IR in the
high-risk subset of our population and establish the
relationship between MS/IR and coronary artery disease
(CAD). In this prospective study, 226 men and women aged
20-80 years, admitted between 2002-2005 for coronary
angiography (CAG) because of clinical suspicion of CAD in our
Institute, were included. Plasma insulin assay (µIU/ml), fasting
plasma glucose (mg/dl) and fasting serum lipid profile as well
as CAG were done for all the patients. MS was defined based
on the NCEP-ATP III guidelines and IR was calculated by
homeostatic model assessment of insulin resistance (HOMAIR). Patients were divided into high IR and low IR groups using
the 50th percentile of our study population (2.7) as the cutoff
value. Among the 226 patients studied, 144 met the criteria
for MS, 161 had CAD, 126 were diabetics, 103 were
hypertensives, 112 were >55 years, 178 were males, 112 were
overweight [body mass index(BMI) >25 kg/m2] and 74 were
smokers. 83% cases with MS had CAD versus 51% in cases
without MS (p<0.0001) and 76% of the CAD positive MS cases
had multi vessel disease versus 64% in CAD positive but MS
negative cases (p<0.0001). IR values of MS cases were
4.25±3.3 versus 2.72±2.7 in MS negative cases (p<0.0001).
Prevalence of CAD in euglycemic-MS cases (84%) was similar
to CAD in diabetic-MS cases (88%) (p=0.7). MS was present in
74% of CAD patients versus 38% in CAD negative cases
(p<0.0001). In CAD positive cases IR values were 4.03±3.45
versus 2.89±2.17 in CAD negative cases (p=0.003); 81% of
high IR cases met criteria for MS versus 46% in low IR group.
MS showed an odds ratio of 3.13 for CAD, which was higher
than that of diabetes (2.26). Similarly MS showed an odds ratio
of 3.13 for high IR, which was much higher than that of
diabetes (2.1). ROC curve analysis showed 2.52 as the ideal
cutoff value of HOMA-IR in identifying MS (with a sensitivity
of 71% and specificity of 70%) in a high-risk South Indian
population. Metabolic syndrome is a better and earlier
predictor of CAD than diabetes, that too of a more severe form
of the disease. The prevalence of both MS and IR in the highrisk subset of our population is very high. IR is dependent more
on the presence of MS than on diabetes.
A.p65
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Vibrational Spectroscopic Studies of
Endarterectomy Specimens
64
Madhu Sankar, Sanjay Cherian, K Jai Shankar,
M Muthusamy, Suresh Kumar, KM Cherian
International Centre for Cardiovascular and Thoracic Diseases,
Chennai
In patients with diffuse coronary artery disease (CAD),
endarterectomy is often performed to remove atherosclerotic
plaques, which improves distal run off and allows complete
revascularization. Endarterectomy specimens removed during
coronary artery bypass surgery (CABG) were subjected to
Fourier Transform Infrared Spectroscopy and Fourier
Transform (FT) Raman analysis with the aim of analyzing the
components and genesis of calcium deposition. It reveals the
presence of calcium phosphate with characteristic PO 4
vibrational bands. Proteins were identified by amides I and II
bands and CH stretching vibrations. FT Raman analysis also
reveals the existence of phosphate by the presence of band at
962 cm–1 P-O stretching vibration. Temperature-dependent
infrared spectra were also performed and compared with
calcified (at 980K) samples spectra. Spectral data were also
compared with various specimens with different age groups.
Photoelectron spectroscopy revealed the presence of Ca, P, O,
C and N in the specimens. In addition to PO4 carbonate is also
present in the sample. TGA studies reveal the weight loss due
to depletion of H2O and protein decomposition. Thus, FT-IR
and FT Raman analyses reveal the presence of calcium
phosphate and proteins. Vibrational studies provide valuable
information on the composition and genesis of calcified
atheromatous plaques in patients with diffuse coronary artery
disease.
Carotid Intimal Medial Thickness—A Newer
Marker of Coronary Artery Disease and its
Correlation with its Severity
65
Mukesh K Sharma, Satyendra Tewari, Sudeep Kumar,
Carotid artery intimal media thickness (IMT) is a simple,
non-invasive and reproducible clinical tool to evaluate
atherosclerosis and predict coronary artery disease (CAD) in
humans. We studied 296 randomly selected patients
hospitalized for coronary angiogram during January 2001 to
December 2004. There were 179 angiographically proven
CAD patients with a mean age of 56.8±13.74 years (range:
31-71 years) (males 71%, females 29%) and 117 subjects with
normal coronaries with a mean age of 54.28±12.38 years
(range: 33-70 years) (males 72%, females 28%). The mean
carotid IMT of CAD patients (0.86 ±0.16 mm) are significantly
higher than non-CAD patients (0.54±0.11 mm) (p<0.001).
Sixty-eight percent (n=122) of CAD patients had carotid IMT
> 0.80 mm and 32% (n=57) had carotid IMT < 0.80 mm,
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Indian Heart J 2005; 57: 381–425
while most (91%, n=106) of subjects with normal coronaries
had carotid IMT < 0.80 mm (p<0.001). Diabetics were having
significantly higher carotid IMT (0.82±0.17 mm) than nondiabetics (0.70±0.16 mm) (p<0.001). Diabetics with CAD had
higher carotid IMT (0.93±0.14 mm) than diabetic patients
with normal coronaries (0.60±0.15 mm) and non-diabetic
CAD patients had higher carotid IMT (0.81±0.16 mm) in
comparison to non-diabetic with normal coronaries
(0.51±0.10 mm) (p<0.001). The mean carotid IMT of triple
vessel, double vessel and single vessel disease was 0.95±0.16
mm, 0.83±0.17 mm and 0.79±0.14 mm, respectively, while
with normal coronaries, these values were 0.54±0.11 mm.
We conclude that there is a strong correlation between carotid
atherosclerosis and coronary atherosclerosis and carotid IMT
is a good predictor of presence and extent of CAD.
Ankle Brachial Pressure Index and Brachial
Ankle Pulse Wave Velocity as a Predictor of
Coronary Artery Disease in Young Patients
undergoing Coronary Angiography
66
HJ Shah, SI Dani, JS Prajapati, S Jain, H Joshi, S Thanvi,
S Ghosh, K Sharma, J Shah, A Jain, T Madan
UN Mehta Institute of Cardiology and Research Centre,
Ahmedabad
Resting ankle brachial pressure index (ABI) and brachial
ankle pulse wave velocity (baPWV) are non-invasive indices
to assess the patency of peripheral arterial system and its role
has been intensively evaluated in predicting coronary artery
disease (CAD). Present study aimed to examine relationship
between ABI, baPWV and presence of CAD in young patients
undergoing coronary angiography. Seventy-two patients of <
40 years of age who had undergone coronary angiography
were studied. Major cardiovascular risk factors including body
mass index, blood pressure (BP), fasting blood sugar (FBS), and
lipid profile were measured. ABI and baPWV were measured
non-invasively using VP1000 (Colin Corporation) automatic
analyzer. Patients with established peripheral vascular disease
(PVD) were excluded from study. Average of right and left ABI
and baPWV were used for analysis. Normal ABI was defined
as between 0.9 to 1.3 and normal baPWV as < 1400 cm/s. Of
72 patients, 43 (59.7%) were male and 29 (40.27%) were
female with mean age of 36.9 years. 56 patients had
baPWV>1400 cm/s of which 54 had angiographically proven
CAD. Of the 16 patients with normal baPWV, 6 had
angiographic CAD. Of the 49 patients with ABI < 0.9, 48 had
angiographically proven CAD while 23 had normal ABI of
which 12 had angiographic CAD. Number of false positive and
false negative case and using ABI and baPWV as a marker for
CAD were 1 & 2 and 2 & 6, respectively. Sensitivity and
specificity of ABI as marker of CAD was 80% and 91.6%,
respectively while that of baPWV was 90% and 83.3%,
respectively. To conclude, ABI and baPWV are simple noninvasive indices which can be used as marker for CAD with
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reasonable specificity and sensitivity in young patients though
larger sample studies are required to recommend its routine
clinical use.
Renal Artery Involvement in Patients of
Coronary Artery Disease undergoing
Coronary Angiography
67
Pankaj Manoria, VK Puri, RK Saran, VS Narain,
SK Dwivedi
The prevalance of renal artery stenosis (RAS) in patients
of coronary artery disease (CAD) has not been studied well in
Indian population. We conducted this study to establish the
prevalence and clinical predictors of RAS in patients
undergoing coronary angiography. We did selective renal
angiography of consecutive 100 patients (males: 85 and
females: 15) with a mean age of 53 years (range: 30-76 years),
who underwent coronary angiography for suspected CAD. Of
the total cohort, 11 (11%) patients had RAS, of which 4 (4%)
had mild stenosis (<50%) while significant RAS (>50%) was
identified in 7 (7%) patients. Three patients had bilateral
involvement. All lesions were focal and occurred in the ostium
or within the proximal third of the renal arteries except in the
two which were in the middle part of renal artery. Systemic
hypertension was present in 44 (44%) patients, smoking in
29 (29%), diabetes mellitus in 26 (26%), dyslipidemia in 41
(41%), family history of CAD in 25 (25%), and renal
insufficiency (serum creatinine >1.5 mg%) was noted in 4 (4%)
patients. We did not find any statistically significant
relationship of RAS with any of these risk factors. However,
there was a trend toward increased prevalence of RAS in
patients of hypertension, renal insufficiency and patients with
>2 risk factors. 85% of the patients of RAS had significant
CAD. The presence of normal coronary angiography has a high
negative predictive value for RAS. Triple vessel disease was
significantly more common in patients of RAS than those
without it. In conclusion, renal angiography should be
considered at the time of coronary angiography if the patient
has evidence of extensive atherosclerosis in the form of triple
vessel disease, in hypertensives, and in patients with multiple
risk factors.
Correlation of High Sensitivity C-Reactive
Protein and Angiographic Coronary Artery
Disease
68
Karun Behal, Aniket Puri, Amit Jain, Rishi Sethi,
SK Dwivedi, VS Narain, RK Saran, VK Puri
Coronary artery disease (CAD) has inflammatory
pathophysiology, so inflammatory markers specially high
sensitivity C-reactive protein (hsCRP) are increasingly
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interrogated in its causation. In various studies from the
Western population, hsCRP has been variably correlated with
angiographic severity of CAD and has been shown to be a
marker of acute coronary events on long-term follow-up, but
there is little data correlating hsCRP with angiographic CAD
in the Indian population, who are known to have a different
demographic and risk profile. We studied 100 patients, 50 each
of chronic stable angina (CSA) and acute coronary syndrome
(ACS), unstable angina and non-ST elevation myocardial
infarction (NSTEMI). All the patients underwent detailed
clinical evaluation, routine bio-chemical profile and coronary
angiogram. In addition, the patients were subjected to hsCRP,
estimation by turbidimetric immunoassay using the QUANTIA
hsCRP reagent kit. Patients enrolled were stratified by levels
of hsCRP into tertiles of <1 mg/L, 1-3 mg/L and >3 mg/L.
30% of the patients were diabetic, 56% were hypertensive and
only 15% had dyslipidemia as per NCEP ATP III guidelines. In
patients with CSA, there was no correlation between hsCRP
levels and angiographically determined severity of CAD
(p>0.05), whereas in patients with ACS, there was a significant
correlation between the two (p<0.05). Significantly greater
number of patients with hsCRP levels > 3 mg/L had double
and triple vessel disease. On 30 days follow-up, patients of both
CSA and ACS having hsCRP levels > 3 mg/L had major adverse
cardiac events (MACE) (death, non-fatal MI and stroke)
significantly higher than patients with hsCRP levels < 3 mg/L
(10.0% v. 3.0%, p<0.05). To conclude, hsCRP levels correlate
significantly with angiographic severity of CAD especially in
patients with ACS and predict 30 days MACE in both CSA and
ACS.
the past; 67.8% patients had at least one unstable plaque.
73.4% had at least one stable plaque. 40.6% patients had single
unstable plaque, 20.3% had 2 unstable plaque and 7% had 3
or more unstable plaque. 46.9% had unstable plaque in left
anterior descending artery (LAD), 20.3% had in left circumflex
(LCx) and 25.9% had in right coronary artery (RCA).
Distribution of stable plaque were LAD: 43.4%, LCx: 33.1%
and RCA: 43.4%. There is a strong correlation between
unstable plaque and ACS. All patients with ≥3 unstable plaque,
24 of 29 patients with 2 unstable plaques and 47 of 58 patients
with single unstable plaque developed ACS. 87 patients with
ACS had 131 unstable plaques (1.58 plaque per patient) and
76 stable plaques (0.88 per patient). 63 patients with stable
angina had 161 stable plaques and 21 unstable plaques (0.33
per patient). 16 patients with stable angina had angiographic
unstable plaque. No correlation was found between the
presence of unstable plaque and presence of conventional
coronary risk factors of diabetes mellitus, systemic
hypertension, smoking habit and elevated LDL levels. Highly
significant correlation was noted between presence of unstable
plaque and post-infarction angina. 82.5% patients underwent
revascularization, 32.9% underwent percutaneous coronary
intervention and 48.3% underwent bypass grafting.
Prevalence of First Time Detected Diabetes
Mellitus and Outcome in Acute Coronary
Syndrome
70
K Aravinda Prasad, Rammurthy Bingi,
Vishnu N Hayagreev
Vijayanagar Institute of Medical Sciences, Bellary
Angiographic Comparison between Stable
Angina and Acute Coronary Syndrome
Regarding Number of Unstable Plaque
69
S Bijulal, Krishnakumar Nair, VK Ajithkumar,
JA Tharakan, KM Krishnamoorthy, Thomas Titus,
G Sreeram, O Shajeem
Thiruvananthapuram
Prospective analysis of consecutive patients who underwent
coronary angiogram between November 2004 to January
2005 for evaluation of stable angina or acute coronary
syndrome (ACS) was done. Coronary lesions were classified
into stable plaque or unstable plaque by previously established
criteria. Risk factors, treatment plan and angiograms of 150
patients were assessed. Mean age was 57 years (range 26-79
years); 130 patients were males and 20 were females. 51%
were diabetics, 60.8% had systemic hypertension, 18.7% had
low-density lipoprotein (LDL) >130 mg%, 54.9% had highdensity lipoprotein (HDL) <40 mg% and 58.5% were smokers.
39.2% had stable angina. 60.8% had ACS. 54.5% had unstable
angina and 30.8% were post-myocardial infarction (MI).
25.9% had post-infarction angina. 25.9% patients had MI in
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The objective of this study was to evaluate the prevalence
and outcome of first time detected diabetes mellitus (DM) in
group of patients hospitalized with acute coronary syndrome
(ACS). 168 patients of ACS were hospitalized from January
2004 to May 2005 in our intensive care unit (ICU). Fifty-one
patients, who were known diabetics were excluded. We
evaluated others for the detection of DM. The ACS profile,
management and outcome of patients clinically detected as
DM for the first time were studied. This group of patients was
matched with non-diabetics with ACS. Outcome during the
hospital stay and at the end of one month will be discussed.
Thirty-six (30%) patients had new onset DM; 25 (69%) had
unstable angina, 4 (11%) had non-ST segment elevation
(NSTEMI) and 7 (20%) had ST segment elevation myocardial
infarction (STEMI). Two (5.5%) deaths occurred in the study
group; 5 (13%) had proteinuria and 2 (5.5%) had retinopathy
at the time of diagnosis of DM. There were 3 (2.5%) deaths in
non-diabetic group. It is concluded that diabetes mellitus
imparts a worse prognosis and higher complications in ACS.
Patients first time detected to have DM in ACS are young, and
women are affected as often as men. Also, mortality is more
than double that among non-diabetics.
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Effects of Early Angiotensin-Converting
Enzyme Inhibitor Therapy on QT Dispersion
in ST Elevation Myocardial Infarction
71
Arunavalli, ST Yavagal, CN Manjunath, B Kumar
Sri Jayadeva Institute of Cardiology, Bangalore
Early in ST elevation myocardial infarction (STEMI) setting,
the dispersion of ventricular repolarization is increased, predisposing to reentry and ventricular tachyarrhythmias.
Angiotensin-converting enzyme inhibitors (ACEI) started early
in this setting reduce the total mortality, including sudden
cardiac death (SCD). We studied the effect of very early ACEI
therapy on QT dispersion (QTd) in STEMI setting. From June
2004 to February 2005, a total of 100 patients with STEMI
were studied prospectively. All of them received thrombolytic
therapy with intravenous streptokinase and were on aspirin
and beta-blocker therapy. Male-female ratio was 2.1:1; 56%
patients had anterior wall infarction,36% had inferior wall
infarction, 6% had high lateral infarction, 2% had global
infarction. The mean age of the patients was 46 years. 48
patients were diabetics, 26 were hypertensives. 65 patients
were started on oral enalapril, within 6 hours of presentation,
at a minimum dose of 2.5 mg twice daily, stepped up according
to the blood pressure (BP) response. Thirty-five patients did not
receive ACEI, as either their initial systolic BP was <90 mmHg
or as they developed first dose hypotension with ACEI. Patients
in cardiogenic shock, complete heart block (CHB) and severe
heart failure were excluded. Heart rate, the minimal corrected
QT interval (QTc min), QTc maximum and QTd were calculated
from the electrocardiograms (ECGs) done at baseline, at the
end of 24 hours, and at the end of one week. (QTd=QTc maxQTc min). The left ventricular ejection fraction (LV EF) was
lower in ACEI group (43.6% v. 49%). On admission, QTd was
similar in both groups. (43±10 ms in ACEI group v. 44±13
ms in non-ACEI group). At 24 hours, QTd was 39±6 ms in
ACEI group and 76±8 ms in non-ACEI group (p <0.01). At
the end of a week, QTd was32±18 ms in ACEI group and
48±15 ms in non-ACEI group (p<0.01). The QTd increase was
due to prolongation of QTc max in both groups. Six patients in
ACEI group, 5 patients in non-ACEI group had primary
ventricular fibrillation from which they were successfully
resuscitated. One patient in ACEI group developed reinfarction
(male, diabetic, with anterior wall infarction) and was
rethrombolyzed. There was no mortality in either group. In
our study, ACEI started very early in STEMI decreased the QTd
as early as 24 hours. The effect was maintained throughout
the hospital course, even though these patients had lower
ejection fraction (EF). Our results suggest that ACEI may have
a primary antiarrhythmic role in STEMI setting, by reducing
the QTd, thereby reducing the electrical instability. ACEI started
very early in STEMI setting and reduces the QT dispersion. Its
impact on in-hospital mortality and SCD needs to be studied
in larger number of patients.
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Prognostic Value of Wall Motion
Abnormalities in Patients with Unstable
Angina and Non-ST Elevation Myocardial
Infarction
72
C Arumugam, V Jaganathan, R Alagesan, M Annamalai,
A Balaguru, G Anuradha, S Venkatesan, G Gnanavelu
Current ACC/AHA risk stratification of unstable angina/
non-ST elevation myocardial infarction (UA/NSTEMI) is based
on various clinical, electrocardiographic, biochemical and
angiographic features. There is no adequate data on the role
of echocardiography in the early risk assessment of patients
with UA/NSTEMI. Echocardiographic regional wall motion
abnormality (RWMA) is a recognized feature in patients with
UA/NSTEMI. We analyzed whether these RWMA can be used
in risk stratification of patients with UA/NSTEMI. The study
included 214 eligible patients diagnosed to have UA/NSTEMI.
Patients with prior infarctions and RWMA were excluded from
the study. All patients underwent echocardiographic
evaluation as early as possible but within 24 hours after
admission. Patients were divided into two groups: Group A those with RWMA, and Group B - those without RWMA. Both
groups were followed up to 1 month after admission. The
results are summarized in the table.
Recurrent ischemia
Clinical LV failure
Duration of hospital stay (days)
Development of STEMI
Cardiac death at 1 month
Group A
Group B
(no RWMA) (RWMA+)
(n = 172)
(n = 42)
p value
14 (8.1%)
8 (4.7%)
7.2
4 (2.3%)
6 (3.4%)
< 0.05
< 0.02
NS
< 0.05
< 0.05
6 (14.2%)
4 (9.5%)
9.6
3 (7.1%)
3 (7.1%)
More number of patients with wall motion abnormalities had
recurrent ischemic symptoms and clinical left ventricular (LV)
failure during the hospital stay which is longer than the
patients without wall motion abnormalities. Development of
STEMI and cardiac death at 1 month were also significantly
higher in patients with RWMA. Echocardiographic RWMA is
observed in 20% of the patients with UA/NSTEMI and had
adverse outcome. Echocardiographic detection of RWMA can
be a useful modality in the initial assessment and risk
stratification of patients with UA/NSTEMI.
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TIMI Risk Score — A Useful Quantitative Tool
for Risk Stratifying Right Ventricular
73
Mohamed Muthiullah, V Jaganathan, R Alagesan,
M Annamalai, S Shanmugasundaram, Geetha
Subramaniam, A Balaguru, G Anuradha, MA Rajasekar,
D Muthukumar, G Ravishankar, C Balasubramaniam
Right ventricular myocardial infarction (RVMI) is associated
with increased in-hospital morbidity and mortality but risk
factors for the same are poorly defined. TIMI risk score has
proved its utility in risk-stratifying acute coronary syndromes
(ACS). Little work to date has attempted to clinically stratify
risk among patients with RVMI. The objective of this study was
to evaluate the clinical utility of TIMI risk score in patients with
RVMI. Fifty patients with confirmed RVMI from consecutive
patients admitted to the coronary care unit (CCU) with acute
myocardial infarction (MI) were included in the study. TIMI
risk score was calculated as per the originally published
criteria. RVMI was defined acute MI with ST segment elevation
> 1 mm in V3R or V4R. In-hospital events were defined as
cardiac arrest, heart failure, cardiogenic shock, ventricular
arrythmias, mechanical complications, atrioventricular (AV)
blocks and death. Patients whose TIMI risk score was ≥ 4 were
30% (n=15) and those with TIMI risk score < 4 were 70%
(n=35). In-hospital morbidity and mortality was higher in
patients with TIMI risk score ≥ 4 (57%, n=8), than in patients
with timi risk score < 4 (23%, n=8), p<0.01. TIMI risk score is
helpful in prognosticating in-hospital morbidity and mortality
in RVMI. It is an accurate and powerful tool which should be
helpful to clinicians treating patients with RVMI.
Clinical and Coronary Angiographic Findings
in Pre-Menopausal Women with Acute
Coronary Syndrome
74
V Rajendran, V Jaganathan, R Alagesan, M Annamalai,
S Shanmugasundaram, Geetha Subramaniam, A Balaguru,
G Ravishankar, C Balasubramaniam
The prevalence of coronary artery disease (CAD) has
alarmingly increased in young women in recent years in our
population. In this context, we analyzed the clinical parameters
and angiographic severity of CAD in pre-menopausal women.
The study cohort consisted of 36 pre-menopausal women who
were admitted for acute coronary syndrome (ACS) in our
coronary care unit. 24 (66%) had ST elevation myocardial
infarction (STEMI) [anterior wall myocardial infarction
(AWMI):15, inferior wall myocardial infarction (IWMI ): 8 and
12 (34%) presented with unstable angina (UA)/non-STEMI].
The mean age was 36 years (range: 30-48 years). Those with
familial hyperlipidemia, connective tissue disorders and
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antiphospholipid antibody syndrome were excluded. The
clinical parameters, risk factor profile, demographic data were
studied. Diabetes mellitus was present in 60%, hypertension
in 45%, obesity [body mass index (BMI) >30 kg/m2] was
observed in 35%. Central obesity (waist circumference >85
cm) was seen in 30%, dyslipidemia in 25%, family history of
CAD in 10%. None of our patients had history of smoking or
oral contraceptive use. All patients were managed as per ACC/
AHA guidelines. Among the acute MI group, 70% received
thrombolysis. In-hospital mortality was 3/36 (8%)- acute MI:
1, unstable angina: 2; 33 patients underwent coronary
angiogram within two weeks of admission. Out of 33 patients,
40% had single vessel disease, 20% two vessel disease and 30%
had triple vessel disease. Remaining 10% showed normal
coronaries. The mean lesion diameter was 94% (range: 70100%). We conclude that pre-menopausal women with ACS
have advanced form of CAD as evidenced by high incidence of
triple vessel disease and critical lesions. They were found to
have adverse clinical outcome. This suggests that aggressive
management strategies will be required in this population.
Coronary Artery Disease in Post-Menopausal
Diabetic Women
75
KA Sambasivam, S Natarajan, PR Vydianathan,
RK Abhaichand, S Suvasini
G Kuppusamy Naidu Memorial Hospital, Coimbatore
The aim of this study was to assess the influence of diabetes
mellitus (DM) on the coronary artery disease (CAD) pattern
in post-menopausal women. 492 patients out of the total 789
who underwent coronary angiogram over the three-year
period formed the cohort. 239 patients had DM (Group I) and
253 did not have DM (Group II). Mean age was 60.62±6.89
years in group I and 60.65±7.23 years (p=0.964) in group
II. There was no significant difference in clinical presentation
in both groups. The mean triglyceride was 168.65±70.39
mg% in Group I and 148±53 mg% in Group II (p=0.008)
Single vessel disease (SVD) was seen in 58 (24%) patients in
Group I and 114 (45%) in Group II. (p=0.000). The
distribution of double vessel disease (DVD) was similar in both
groups – 48 (20%) in Group I and 55 (21%) in Group II
(p=0.652). Triple vessel disease (TVD) was present in 131
(54%) in Group I and 86 (34%) in Group II (p=0.000). Though
not statistically significant, diffuse disease was seen more in
Group I, 21 (9%) versus 5 (2%) (p=0.572). Left main coronary
artery disease (LMCD) was present in 14 (5.86%) in Group I,
and 19 (7.51%) in Group II (p=0.464). We conclude that postmenopausal diabetic women had significantly more triple
vessel disease. Triglyceride level was significantly associated
with CAD in DM group.
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Prevalence of Coronary Artery Disease in
Pre-Menopausal Women in South India
76
The purpose of this study was to assess the prevalence and
association of risk factors with coronary artery disease (CAD)
in pre-menopausal women. Out of 789 consecutive females
who underwent coronary angiogram between January 2001
and December 2004, 153 were pre-menopausal and formed
the cohort. 87 (56%) had angiographic evidence of CAD ( >
50% diameter stenosis) (Group A) and 66 (43%) had no
significant CAD (Group B). The mean age in Group A was
48±5 years and 45±6 years in Group B (p=0.002). Diabetes
mellitus (DM) was present in 35 (40%), in Group A and 12 in
(18%) in Group B (p=0.003). Systemic hypertension (SHT) in
48 (55%) in Group A and 25 (38%) in Group B (p=0.034).
Dyslipidemia (DLP) in 32 (37%) in Group A and 3 (4%) in
Group B (p=0.000). Mean total cholesterol (TC) in Group A
was 197.52±33.31 mg% and 151.67±25.46 mg% in Group
B (p=0.000). Mean low-density lipoprotein (LDL) was 127±28
mg% in Group A and 78±16 mg% in Group B (p=0.006).
Mean high-density lipoprotein (HDL) was 42.48 ±6.40 mg%
in Group A and 44.21±7.29 mg% in Group B (p=0.256). The
mean triglyceride level (TGL) in Group A was 153.74±62.38
mg% and 130.36±75.74 mg% in Group B (p=0.134). 40
(46%) had single vessel disease (SVD), 22 (25%) had double
vessel disease (DVD), 25 (28%) had triple vessel disease (TVD)
and 5 (6%) had left main coronary artery disease (LMCD). On
univariate analysis, age, DM, SHT, DLP had significant
association with CAD (p=0.005). On multivariate analysis,
DLP showed stronger association with CAD. More than half
of pre-menopausal women who underwent CAG, had evidence
of CAD. SVD was seen more frequently. Those with CAD were
relatively older and dyslipidemia was found to have significant
association with CAD.
Clinical and Angiographic Profile of
Coronary Ectasia
77
Jain T Kallarakkal, R Ajay Kumar, M Ramesh,
G Sengottuvel, Asha Moorthy, M Jayarajah,
S Thanikachalam
With the increase in availability of procedures to analyze
coronary blood flow and quantify perfusion, the initial concept
of coronary ectasia as a benign disorder has changed. Out of
a total number of 6,121 patients who underwent coronary
angiography due to suspicion of coronary artery disease (CAD)
in our institute from May 2002 to January 2005, 182 (3%)
patients were found to have coronary ectasia. 95 (52%) among
them were diabetics, 86 (47%) hypertensives, 47 (26%)
smokers and 102 (56%) were dyslipidemic. 155 (85%) cases
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had abnormal rest electrocardiogram (ECG) and 52 (29%) had
positive exercise ECG. 118 (65%) among the 182 cases had
obstructive lesions (males: 116, females: 2, mean age:
57.8±7.5 years) and 64 (35%) had non-obstructive lesions
(males: 58, females: 6; mean age 55.4±9.3 years). 36 (31%)
patients with obstructive lesions and 15 (23%) patients with
non-obstructive lesions had prior history of acute coronary
syndrome (ACS). Most commonly affected vessel with coronary
ectasia was right coronary artery (RCA) (62%) followed by left
anterior descending (LAD) artery (52%), left circumflex artery
(LCx) (47%) and left main coronary artery (LMCA) (6%).
Commonest type of ectasia was diffuse (46%) followed by
proximal (35%) and multiple segment (19%). 24 patients with
associated triple vessel disease underwent bypass grafting and
11 patients underwent percutaneous transluminal coronary
angioplasty (PTCA). One patient with a tight left main disease
expired immediately after the angiography even after getting
intra-aortic balloon counter pulsation. All symptomatic
patients were started on oral anti-coagulation. To conclude,
the incidence of coronary ectasia among patients undergoing
coronary angiography in our institute was 3% and contrary
to belief, coronary ectasia is not always benign. It can cause
ACS even in the absence of flow limiting CAD and there is a
strong association between coronary ectasia and coronary
atherosclerosis. It may be a variant in the pathology of CAD.
Distal Coronary Artery Disease
S Venkatesan, G Gnanavelu,V Jaganathan, R Alagesan,
M Annamalai, S Shanmugasundaram, S Geetha,
A Balaguru, G Anuradha
78
Atherosclerosis is typically prone to occur in the proximal
segments of coronary arteries. The clinical implications of
proximal coronary artery disease (CAD) are well known. The
real prevalence of distal CAD is largely unreported. The aim
of this study was to find out the prevalence rate of isolated
distal CAD and its angiographic features. Distal CAD was
diagnosed when it occurred distal to second septal or diagonal
in left anterior descending (LAD), or in the D1 or S1 if it was
20 mm away from its origin. In left circumflex (LCx) and right
coronary artery (RCA), distal CAD was diagnosed when the
lesions were beyond obtuse marginal (OM) or right ventricular
(RV) branches, respectively. All posterior descending artery
(PDA) and posterior left ventricular (PLV) lesions were
considered distal. All lesions with > 20% diameter stenosis
were included (since the aim was to detect atherosclerosis and
not the obstructive CAD). 360 angiograms from our laboratory
were reviewed sequentially. Clinical diagnosis were chronic
stable angina (CSA): 45%, unstable angina (UA): 35%, acute
myocardial infarction (MI): 20%, rheumatic heart disease
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Indian Heart J 2005; 57: 381–425
(RHD): 4%. Diabetes was documented in 15%. Age range was
22-73 years (mean: 56 years), with male-female ratio of 3.5:1.
Patients with ≥1 proximal lesions were excluded. Isolated distal
CAD occurred in 68 (19%) cases. It was most commonly seen
in the clinical subset of CSA, and double vessel distal CAD was
the most common subset (52%). Triple vessel distal CAD was
seen in 30%. The prevalent combinations were distal, PDAOM /D2, PDA/DI /OM, LAD/PDA/OM. Single vessel distal CAD
was the least common (18%). Among single vessel disease
(SVD), PDA lesion was the commonest, LAD was least
common. The mean length of distal CAD was 5 mm (range: 214 mm). The mean severity of lesion was 50% (range: 20100%). Total occlusion in distal segments was a rarity (3/68).
Eccentric lesions occurred in 10%. Intra -coronary thrombosis
and calcification was not seen in any. Luminal irregularity in
distal segments was seen in about one-third of all patients. We
conclude that isolated distal CAD occurs in significant
population among CAD. It is most common in PDA followed
by LCx and its branches, diagonals, and least common in the
main LAD. The lesions generally are shorter and less severe.
Even though atherosclerosis has a predilection for proximal
coronary arteries, our observations reveal that a significant
burden of atherosclerosis occurs exclusively in the distal
coronary vascular bed . It could have important therapeutic
implications in selecting the modality of interventions.
Correlation of Serum Nitric Oxide with
Coronary Angiographic Vessel Severity
79
D Rajasekhar, G Subramanyam, V Vanaja, Latheef,
M Praveen, S Guruprasad, A Ravikanth, AK Naidu
Sri Venkateswara Institute of Medical Sciences, Tirupathi
The objective of this study was to investigate the association
of serum nitric oxide with vessel severity. We enrolled 51
patients who were admitted for coronary angiography in our
institute. Non-fasting blood samples were drawn from all the
subjects. Serum was separated and assayed for serum nitric
oxide using Greiss method. A higher level of serum nitric oxide
was observed in patients with one vessel (39.37 and 19.36
nm/l) followed by three vessel (34.72 and 27.20 nm/l), normal
coronaries (32.76 and 31.28 nm/l) and two vessel disease
(29.84 and 19.51 nm/l). No mean difference was observed
with reference to vessel severity when examined with one-way
analysis of variance (ANOVA). No correlation was observed
between serum nitric oxide and vessel severity. Results of the
present study show that endogenous nitric oxide may not be
associated with vessel severity.
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Troponin-T Levels and its Correlation with
Mechanical Complications in Patients of
80
NN Khanna, A Lalchandani, SK Saxena, RPS Bharadwaj,
M Ahmed, CM Verma, P Neelam, A Agarwal, V Agarwal,
P Sondhi, G Preethi
GSVM Medical College and Escorts Heart Centre, Kanpur
This study was done to evaluate the clinical utility of
troponin-T (TnT) and echocardiography to predict adverse
cardiac events in patients of acute myocardial infarction (MI).
The temporal relation of TnT levels with various cardiac events
was also studied. A prospective study was done on 200 patients
of acute MI selected from our cardiac clinics. TnT was done in
all the patients at admission and serially every 6 hours for 24
hours. Patients were divided into three groups on the basis of
troponin levels. Serial echocardiography was also done in all
these patients to assess various hemodynamic changes and
mechanical complications. TnT level was found to be < 0.4
ng/ml in 30% cases, 0.4-0.5 ng/ml in 56% cases, while 14%
patients showed values exceeding 0.5 ng/ml. Group 1 (TnT <
0.4 ng/ml) patients showed no mechanical complications. In
Group 2 (TnT: 0.4-0.5 ng/ml), 20% showed mild to moderate
mitral regurgitation (MR), 4% showed free wall rupture and
2% showed ventricular septal defect (VSD). In group 3 (TnT
>0.5 ng/ml), 6% patients expired due to free wall rupture and
severe MR. In conclusion, increased level of TnT is associated
with increased incidence of mechanical complications, thus
it is a prognostic indicator in patients of acute MI. TnT can be
used to guide the treatment and course of rehabilitation, so as
to make the test cost-effective.
Blood Levels of Myeloperoxidase, C-Reactive
Protein and Troponin I as Prognostic Markers 81
in Acute Coronary Syndrome
A Lalchandani, T Digvijay, SK Saxena, P Sondhi,
NN Khanna, RPS Bharadwaj, M Ahmed, CM Verma,
A Agarwal, V Agarwal, M Shameem
GSVM Medical College, LPS Institute of Cardiology and Escorts Heart
Centre, Kanpur
Due to the irreversibility of most acute cardiac events there
is always an interest in searching for simple tests to single out
patients with bad prognosis so that timely revascularization is
planned or they are put on intensive conservative regimes. In
this study, three biochemical markers were used with this aim.
Forty-eight patients of diagnosed acute coronary syndrome
(ASC) [acute myocardial infarction (AMI): 28 and unstable
angina: 20] were selected for the study. After a thorough
history and physical examination, complete hemogram, lipid
profile, electrocardiogram (ECG) and echocardiography (echo)
was done. At 6 hours of onset of chest pain, all patients were
subjected to C-reactive protein (CRP), myeloperoxidase (MPO)
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Indian Heart J 2005; 57: 381–425
and troponin-I (Trop-I) levels estimation in blood. Out of 9
patients having Trop-I >5 ng/ml, 6 (66.6%) had significant
cardiac events and 4 (44.4%) died because of MI. Out of those
with CRP levels >24 mg/L, 7 (58.3%) had cardiac events and
4 (33.3%) died of MI. Out of those with MPO level >394 pm,
7 (70%) had a cardiac events and 4 (40%) died because of MI.
Higher levels of Trop-I, MPO and CRP were associated with
greater number of cardiac events and greater mortality
outcomes. After large scale studies for determination of their
accuracy, cost effectiveness and practicality, these tests may
be used in future for prognostication and management of ACS
patients.
controls probably offset by statin medication. Despite this, the
rise in CMV antibody levels in patients occurring concordantly
with IL-6 supports the activation of inflammatory response
in CAD probably triggered by past sub-clinical infection.
Relationship between Serum Cardiac
Markers according to Type of Myocardial
Infarction
83
S Basu, B Mitra, D Kumar, S Mondal, M Panja
Hospital, Kolkata
Relationship among Antibody against
Cytomegalovirus, Plasma Interleukin 6 and
Coronary Artery Disease: Preliminary
findings of Indian Atherosclerosis Research
Study
82
VV Kakkar, VS Rao, B Natesha, S Kanjilal, SS Iyengar,
M Mukherjee
Narayan Hrudayalaya Hospital, Bangalore and Thrombosis Research
Institute, London
Certain viral/bacterial pathogens have been implicated in
the activation of inflammatory mediators through immune
response, cross reactivity with 'self' antigens or upregulation
of cytokines, all of which culminate in progression of
atherosclerosis. The aim of the study was to examine if levels
of antibodies against cytomegalovirus (CMV) were raised in
patients with coronary artery disease (CAD), and if this was
associated with a rise in markers of inflammation. None of
the patients or controls had concomitant infection. Serum IgG
antibodies against CMV, and levels of interleukin-6 (IL-6), Creactive protein (CRP), soluble P-selectin and ICAM-1 were
estimated by ELISA. At first, antibodies against CMV were
measured in 235 patients aged 51.1±11.2 years consisting
of 89% males schedules for coronary artery bypass grafting
(CABG) and 86 unrelated controls aged 55.4±9.2 years
consisting of 86% males. The median level (interquartile
range) of CMV antibody was 7.1 IU/ml (4.6 IU/ml-27.8 IU/
ml) for controls and 12.1 IU/ml (8.3 IU/ml-67.3 IU/ml) for
patients (2-tailed p<0.0001 – Mann-Whitney test). Next, the
levels of antibody and circulating markers were estimated in
a separate group of 85 patients related to the controls aged
56.4±9.1 years and 84% males, scheduled for CABG/
percutaneous transluminal coronary angioplasty (PTCA). 34
patients and 1 control were on medication with statins. The
median CMV antibody level of the patients was 32.1 IU/ml
(6.4-44.5 IU/ml; p=0.002 relative to controls). The median
IL-6 levels of controls and patients were 2.4 pg/ml (1.4-3.3
pg/ml) and 3.6 pg/ml (2.2- 4.9 pg/ml), respectively (p=0.005).
The other markers were comparable between cases and
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The use of newer biochemical markers for diagnosing
myocardial infarction (MI) is rapidly increasing and cardiac
troponin has established itself to be most reliable in this regard.
The ACC have redefined the diagnostic criteria for acute MI to
include measurement of cardiac troponin. This
recommendation has led to increased availability of troponin
assay, and impact on patient management and epidemiology.
However, in our country troponin assay is not available in all
places except tertiary level hospital. Hence we tried to find
relationship between the old (CPK) and newer [troponin-T
(Trop-T)] myocardial injury markers. Categorized according
to electrocardiography changes, risk factors (diabeties and
smoking) and peak CK level to find out if an estimate of TropT level from a known CPK value can be made and if it can
provide some guidance on equivalence between the two tests.
Study included 400 patients (80% male; mean age 56 years,
range: 35-76) admitted to our Hospital with acute MI over 4month period of study. Electrocardiographic (ECG) diagnosis,
thrombolytic status and peak serum CK and Trop-T (6-24
hours following admission) concentration were recorded. The
study populations were divided into groups according to ECG
diagnosis of Q and non-Q MI and also according to peak level
of CK twice the upper limit of normal (old WHO biochemical
criteria of acute MI). The value of 400 IU/L was our laboratory
reference of two times the normal. This CPK group was
subdivided into peak CPK level >400 IU/L, 400-1200 IU/L,
1200-2000 IU/L, >2000 IU/L. The deferences in level of serum
markers between the subgroups were compared using student
t test for unpaired sample. Values of Trop-T and CPK were
correlated using Pearson's correlation method. Simple linear
regression was used to derive a equation to facilitate the
prediction of Trop-T level from peak CPK level. To allow the
prediction of Trop-T level from measurement of peak CPK level,
the regression equation Trop-T = 0.0056 (peak CPK) + 1.13
was obtained. Our study provides the physician with the ready
benchmark for assessment of Trop-T level from peak CPK level.
Follow-up of patients is currently underway for further
exploring the data to see what independent correlation, if any,
Trop-T level has in predicting future cardiac events in postacute MI patients.
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Anemia as an Independent Variable in
Prognosis of Patient with Acute Myocardial
Infarction with and without Percutaneous
Coronary Intervention
84
B Majumder, SD Singh, S Basu, B Mitra, M Panja
Hospital, Kolkata
Prognosis after acute myocardial infarction (MI) is largely
determined by left ventricular function and residual ischemia
after reperfusion. We sought to investigate the impact of
anemia in patients after acute MI. The patients were subdivided
into those who received delayed percutaneous coronary
intervention (PCI) and, those who were managed on
conservative treatment. 600 patients presenting with Q wave
MI were studied (male: 480, female: 120, age range 35-75
years). Anemia (defined according to WHO criteria <39% in
male, <36% in female) was present in 216 (36%) male: 144,
female: 72). Out of 600 patients, 236 (male: 200, female: 36)
underwent PCI subsequently for recurrence of chest pain
during index hospitalization. Patients with anemia had a
higher rate of hemorrhagic complication compared to those
without (5% v. 1.6%, p< 0.001). Patients in PCI group with
anemia had a higher rate of bleeding complications (6.8% v.
1.6%, p<0.001). The mortality rate at 30 days was increased
in those with anemia compared to those with normal
hematocrit (6% v. 3%, p<0.001). In the PCI group mortality
was high (5.6% v. 2.4%). Male patients with anemia showed
more adverse outcome than women. Thus, anemia at
presentation in patients with acute MI managed conservatively
as well as those with intervention is strongly associated with
adverse outcome and increased mortality. Follow-up of
patients to see if the differences persist over long term is
underway.
Values of V4R, V1 and aVL Lead during
85
Exercise Treadmill Test in Predicting
Coronary Artery Disease and Pointer to Vessel
Involved
B Sreenivasa, U Ajay, Mahajan, C Prabhakar Koregol
Lokamanya Tilak Municipal Medical College and General Hospital,
Mumbai
The computerized stress test (treadmill exercise) findings
of 75 patients who underwent test with V4R lead and also
underwent coronary angiography within 3 months between
January 2005 to March 2005 were analyzed. A significant ST
elevation in V4R or V1 lead was defined as >0.5 mm of ST
segment deviation 80 ms from J point. Out of 75 patients, 70
had >50% narrowing of one or more coronary arteries.
Twenty-one patients had single vessel disease, 24 had doublevessel disease and 25 had triple-vessel disease. Sensitivity for
diagnosis of single-vessel, two-vessel and three-vessel disease
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was 75%, 91% and 94%, respectively. 39 patients had above
50% diameter narrowing of right coronary artery (RCA) of
which 20 had 0.5 mm ST elevation in V4R lead. The sensitivity
of V4R lead for the diagnosis of RCA was 48% with a specificity
of 66%. With proximal RCA involvement alone, sensitivity was
62% and specificity 67%; 49 patients had >50% left anterior
descending (LAD) stenosis; 16 patients had isolated
involvement of LAD of which 11 were proximal LAD stenosis.
Sensitivity of V1 lead for detection of isolated proximal LAD
involvement was 60% and specificity of 93%. ST elevation in
aVL was seen in 21 patients and all these patients had coronary
artery disease (CAD). Our study shows that V4R lead is useful
in the detection of proximal RCA lesion. ST elevation in V1 is
fairly sensitive for detection of proximal LAD stenosis and >1
mm elevation is highly specific for detection of proximal LAD
lesion. ST elevation in aVL is highly specific for detection of
CAD. It is not useful in the localization of coronary artery
lesion.
Correlation of Braunwald's Clinical
Classification of Unstable Angina Pectoris
with Angiographic Extent of Disease and
Intra Luminal Thrombus
86
B Sreenivasa, Prabhakar C Koregol, AU Mahajan
Mumbai
Between June 2004 to May 2005, 150 patients (male: 93,
female: 57) of unstable angina who underwent coronary
angiography were analyzed. Patients were divided according
to Braunwald's clinical classification. Patients with secondary
unstable angina were excluded. 20% had class I angina, 48%
had class II angina, 32% had class III unstable angina. 24%
patients had post-infarct unstable angina (class C) and 76%
had primary unstable angina (class B). ST-T changes on
electrocardiogram (ECG) were present in 66% patient. On
coronary angiography, 26 (17.5%) patients had normal
coronaries, 33 (22%) patients had single vessel disease, 42
(28%) patients had double vessel disease and 49 (32.5%)
patients had triple vessel disease. Correlation with Braunwald's
clinical classification showed single vessel disease to be higher
in class I compared to class II (40% v. 19.8%, p=0.014) and
class III (40% v. 15.6%, p=0.01). Single vessel disease was
found to be higher in class C than in class B (47% v. 20%,
p=0.01). The analysis with respect to intraluminal thrombus
according to Braunwald's classification showed that 4 (6.66%)
patients in class I had thrombus, while 31 (22%) in class II
and 14 patients (29%) in class III had intraluminal thrombus.
Our data suggest that in patients with primary unstable
angina, Braunwald classification correlates well with severity
of coronary artery disease and the probability of intra
coronary thrombosis increases as class increases, suggesting
a need for aggressive therapy.
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Do Q Waves on Electrocardiogram Predict
Non-viable Mycardium after Acute
87
B Sreenivasa, Ajay U Mahajan, Prabhakar C Koregol
Lokamanya Tilak Municipal Medical College, and General Hospital,
Mumbai
Controversy exists regarding the significance of
pathological Q waves on electrocardiogram (ECG) after
established acute myocardial infarction (MI) in predicting nonviable myocardium. Dobutamine stress echocardiography
(DSE) is now widely used to access viable myocardium after
acute MI. We undertook study to ascertain the credibility of Q
wave on the ECG to predict myocardial viability after acute MI.
Fifty patients who underwent both ECG and DSE, at a mean of
7 days post-acute MI were assessed. Non-viability on ECG is
defined as the presence of pathological Q waves in at least 4
out of 6 pre-cordial leads or Q waves in all 3 of the inferior
leads. Non-viability on DSE is defined as absence of contractile
response in 7 out of the 9 anteroseptal segments or in 3 of the
4 inferior region segments. Of the 50 patients, 35 (70%)
presented with anterior and 15 (30%) with inferior wall
myocardial infarction (IWMI). Relationship between viability
detected by ECG and that by DSE is shown in the table.
DSE viability
ECG viability
ECG non-viability
25
10
DSE non-viability
13
02
The positive and negative predictive values of Q waves on ECG
to predict non-viable myocardium have been 17% and 66%
respectively. In conclusion, the presence of Q wave does not
predict non-viable myocardium. However, the absence of Q
waves predict the presence of viable myocardium.
Prediction of Left Ventricular Systolic
Dysfunction in Acute Anterior Myocardial
Infarction by the Ischemia Grading on
Admission Electrocardiogram
88
Mohammad Shafiqur Rahman Patwary
National Institute of Cardiovascular Disease, Dhaka, Bangladesh
This prospective study was carried out during the period
April 2002 to December 2002 to find out the relation of
ischemia grading on admission electrocardiogram (ECG) with
left ventricular (LV) systolic function. A total of 200 patients
with acute ST-segment elevation anterior myocardial
infarction (MI) were included in this study. All the patients were
categorized into grade-2 and grade-3 ischemia on the basis of
changes in QRS complex and ST-segment on admission ECG.
Patients were followed up clinically, electrocardiographically,
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echocardiographically, and left ventriculographically. Among
them, 70% had grade-2 and 30% had grade-3 ishemia. CKMB was more elevated in grade-3 than in grade-2 (p<0.05).
Systolic blood pressure was lower in grade-3 than in grade-2
(p<0.05). Large infarct size evident from electrocardiography
i.e. extensive anterior MI, number of leads with ST elevation,
sum of ST elevation and Selbester score was more in grade-3
patients than grade-2 patients (p<0.05). LV dysfunction
determined by echocardiographic or left ventriculographic
ejection fraction was more prevalent in grade-3 than in grade2 patients, and EF <45% was significantly more in grade-3
than ingrade-2 patients, indicating it to be directly related to
LV dysfunction. The study concludes that grade-3 ischemia is
related to more left ventricular systolic dysfunction than
in grade-2 ischemia. Grade-3 ischemia is predictive of more
extensive myocardial involvement. Patients of grade-3
ischemia had worse clinical outcome than those of grade-2
ischemia.
Oral Folic Acid, Serum Homocysteine and
Morbidity of Patients with Chronic Stable
Angina
89
Farzad Jalali, K Hajian, MR Niaki
Babol University of Medical Sciences, Babol, Iran
In addition to traditional cardiovascular risk factors, high
levels of plasma homocysteine may be the other risk for
atherosclerotic diseases. The probable mechanism is
endothelium dysfunction. Ten percent of population had
hyperhomocysteinemia. Folic acid is a potent factor in lowering
plasma homoycysteine. The purpose of this study was,
evaluation of the effect of folic acid on plasma homocysteine
level and morbidity in patients of stable coronary artery disease
(CAD). In 52 stable CAD patients, the plasma levels of
homocysteine, folic acid and vitamin B12 were measured and
morbidity-related indices (the number of sublingual per week,
typical anginal chest pain per week, frequency of
hospitalization due to cardiovascular disorders in three
months, functional class and electrocardiographic changes)
determined. All patients received 2 mg oral folic acid daily for
3 months. At the end of follow-up, the levels of homocysteine
and morbidity were determined again. Folic acid
supplementation for 3 months was associated with decrease
in homocysteine level by 44% (p=0.000). Non-significant
decrease in serum folic acid level was observed (p=0.193).
There was significant decline in all morbidity- related indices
(TNG consumption and chest pain: p=0.001, functional class:
p=0.001, hospitalzation: (p=0.01). It is concluded that oral
folic acid mg daily 2 for 3 months is associated with decrease
in serum homocysteine level and morbidity in CAD patients.
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Use of Orlistat in Coronary Patients
AWS Leung, KW Chan, YS Fung, HF Hung, PT Tsui,
HK Chu, YW Chan
90
Princess Margaret Hospital, Hong Kong SAR, China
Both obesity and hypercholesterolemia are common
cardiovascular (CV) risk factors. Orlistat is effective in reducing
weight and improving lipid profiles. We have few data on the
use of orlistat in patients with coronary artery disease (CAD).
This study shows the effect of orlistat on weight and lipid
profiles in Chinese patients with CAD and overweight/obesity.
This is an open-label uncontrolled study. Thirty Chinese
patients with CAD, body mass index (BMI) >25 kg/m2 and lowdensity lipoprotein-cholesterol (LDL-c) >2.6 and <4.1 mmol/
L were enrolled. They were put on weight-reducing diet for 12
weeks. Afterward, those with BMI >25 kg/m2 received orlistat
120 mg thrice daily for 24 weeks. The body weight (BW) and
lipid profiles before and after diet and orlistat treatment were
compared using non-parametric statistical test. Thirty patients
were enrolled; 29 received orlistat; 1 patient defaulted and
another withdrew from the trial because of acute myocardial
infarction (MI). Patient compliance to orlistat was high and
side effects were tolerable.
BW (kg)
BMI (kg/m2)
TC (mmol/L)
TG (mmol/L)
HDL-c (mmol/L)
LDL-c (mmol/L)
Baseline
12 weeks
dietary therapy
After %
(p value)
12 weeks diet &
24 weeks diet+orlistat
After %(p value)
76.6±8.0
28.6±3.4
5.32±0.76
2.10±1.01
1.03±0.17
3.33±0.62
75.5±8.5 1.6 (<0.001)
28.1±3.5 –1.7 (0.001)
5.16±0.68 -3.0 (0.121)
1.86±0.86 -11.4 (0.084)
1.04±0.17 +1.0 (0.990)
3.27±0.50 -1.8 (0.405)
73.3±9.2 –4.6 (<0.001)
27.3±3.7 –4.5(<0.001)
4.89±0.69 -7.7 (0.001)
1.93±1.03 -9.8 (0.254)
1.02±0.18 +1.0 (0.732)
3.05±0.44 -8.7 (0.030)
12 weeks diet therapy produced a small but significant
reduction in BW (1.6%) and BMI (1.7%). Addition of 24 weeks
of orlistat produced a higher reduction in BW (4.6%) and BMI
(4.5%), both significant. Dual therapy reduced total cholesterol
(7.7%) and LDL-c (8.7%) significantly. Orlistat, together with
diet therapy, significantly reduced body weight and BMI, and
improved total cholesterol and LDL-c in Chinese patients with
CAD and overweight/obesity.
An Independent Risk Factor for Prediction of
Morbidity and Mortality in Acute Myocardial
Infarction: QT Dispersion
91
Farzad Jalali, K. Hajian
Babol University of Medical Sciences, Babol
Many investigators consider QT dispersion (QTd) to reflect
heterogeneity of ventricular repolarization and its predictive
power in arrhythmias and sudden cardiac death, after
myocardial infarction (MI). We studied the relation between
QTd – as an independent factor – and hospital morbidity and
post-discharge mortality in patients with acute MI. The study
included 200 patients with acute MI admitted in our hospital.
Information about age, sex, medical history, location and type
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of MI, left ventricular ejection fraction (LVEF), and duration
of hospitalization was collected. QTd (maximal minus minimal
QT interval) was calculated in standard 12-lead
electrocardiogram. Mean QTd in all cases was 74±9 ms. In 6
patients who died during six months follow-up, the mean of
QTd was 103±11 ms and was significantly higher than
survivors (QTd mean: 74±8 ms) (p<0.05). The mean of QTd
with complicated acute MI was 81±10 ms, and had no
significant difference from non-complicated group (QTd mean:
72±8 ms (p>0.05). We divided complicated patients in four
groups: bradyarrhythmia and conductive disturbance in 14
cases (QTd mean: 79±9 ms), atrial tachyarrhythmia in 7 cases
(QTd mean: 73±14 ms), ventricular arrhythmia in 16 cases
(QTd mean: 86±11 ms) and acute heart failure and
cardiogenic shock in 9 cases (QTd mean: 92±3 ms). We found
no significant difference between these four groups by using
one way ANOVA test (p>0.05). In our study there was no
significant relation between QTd and LVEF (Pearson's
coefficient correlation, p=0.78, r=0.16). QTd can be used as a
simple and easily available criterion for prediction of shortterm mortality after MI. In this study there was no definite
relation between QTd with other complications or LVEF after
MI.
Non-Traumatic Coronary Artery Dissection
in Acute Coronary Syndromes: Is it Just a
Plaque Rupture?
92
R Pothiwala, N Tanwar, A Ranjan, N Vayada,
S Suryawanshi, H Malhotra, SM Shah, S Shah, T Patel
Spontaneous coronary artery dissection (SCAD) is relatively
rare and usually associated with Marfan’s syndrome or
pregnancy. Traumatic coronary dissection occurring
secondary to catheter tip, balloon or stent injury is seen more
frequently than SCAD in the interventional era. We present
15 consecutive cases of spontaneously occurring nontraumatic coronary artery dissection in acute coronary
syndrome (ACS) presenting in our centre from 2004–2005.
All patients were men and the mean age was 54.8±11 years
(range: 40- 74 years). Mean height of patients was
163.7±15.8 cm. Twelve (80%) patients were hypertensive
while diabetes mellitus was present in 13 (86.6%) and
dyslipidemia in 9 (60%) patients. Coexisting obstructive
atherosclerotic coronary artery disease (CAD) was observed
in 11 (73.3%) patients, while other 4 had no angiographic
evidence of atherosclerotic CAD but they had coronary risk
factors. Eleven (73.3%) patients presented with acute
myocardial infarction (MI) and rest with unstable angina. The
mean left ventricular ejection fraction (LVEF) was 38.6±17.5%
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Indian Heart J 2005; 57: 381–425
(range: 25-60%). Angiography demonstrated 19 dissected
vessels in total (range: 1–2); the vessels involved were left
anterior descending (LAD) in 13 cases, circumflex (LCx) in two
cases and right coronary artery (RCA) in four cases. The
incidence of single and double vessel involvement was observed
in 11 and 4 patients, respectively. No dissection involved left
main coronary artery and aorta. Flow rates in the dissected
vessels were TIMI 0–1 in 2 vessels, TIMI 2 in 7 vessels, and
TIMI 3 in 10 vessels. Mean dissection length was 19.5±6.2
mm. Coronary bypass grafting (CABG) was carried out in 2
(14.2%) patients and 12 underwent percutaneous
interventions. One patient who had dissection of nondominant RCA was managed medically. Fourteen stents were
deployed (8 drug-eluting stents) at mean pressure of 10.2±2.4
atm. Mean stent diameter was 3.4±0.5 mm and length was
24.9±9.1 mm. In our study, SCAD shows an exclusively male
preponderance with ACS as exclusive presentation. The clinical
scenario and the extent of dissection determine the course of
management. No patient in our study had traditional risk
factor for SCAD. Majority of patients had evidence of
atherosclerotic CAD and were having risk profile of CAD. As
all of these patients presented with ACS, these dissections were
possibly secondary to plaque rupture.
Waist to Hip Ratio and Body Height in
Patients with Myocardial Infarction
93
F Jalali, K Hajian, MR Niaki
Babol University of Medical Sciences, Iran
Now-a-days, investigators study about independent risk
factors of myocardial infarction (MI). These factors, without
relation to other risk factors can cause coronary artery disease
(CAD) and MI. Waist-to-hip ratio (WHR) and height have been
considered to be correlated with MI. The aim of this study was
to show the independent association of WHR and height with
MI. This was an observational case-control study in which,
after controlling for dyslipidemia, hypertension, diabetes
mellitus, smoking and positive family history for MI and
matching of age and sex, 350 cases with MI and 250 controls
without MI were evaluated. WHR and height were measured
in cases and controls. Mean WHR was 0.96 in cases and 0.92
in controls and their difference was 0.04 (p<0.001). In both
sexes and in all age groups, WHR had a significant relation to
MI. Mean of height was 160.7 cm in cases and 163 cm in
controls and their difference was 2.3 cm (p<0.05). Height had
independent relationship with MI in men and in younger
subjects. WHR is an independent risk factor for MI. Similarly,
at least in men and in younger subjects, an independent
association between height and risk of MI was noted.
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Outcome of Coronary Artery Disease in
Patients with Diabetic Nephropathy
94
Behzad Heidari, Parham Heidari
Shaheed Beheshti Hospital, Babol University of Medical Sciences, and
Azad University, Karaj, Iran
Microvascular and macrovascular diseases are frequently
seen in diabetic patients in particular those with proteinuria.
Patients with diabetic nephropathy (DN) are at increased risk
of vascular involvement including coronary artery disease
(CAD). The present study was performed to determine the
frequency and outcome of CAD in patients with DN. Patients
with chronic renal failure (CRF) with DN entered the study.
Diabetes was confirmed according to history and
determination of fasting blood glucose. Diagnosis of DN was
confirmed on the basis of 24 hours urinary protein excretion
of ≥500 mg and exclusion of other diseases with proteinuria.
CAD was confirmed by taking history, clinical examination,
and review of medical records. 38 patients (18 males, 20
females) with CRF attending for routine clinical follow-up
examination were studied. The mean age was 58±11 years
and the mean duration of diabetes was 14.8+4.0 years. The
median urinary protein excretion was 2500 mg/day (range:
500-8500 mg). Protein excretion in range of nephrotic
syndrome was observed in 13 (34.2%) patients. Hypertension
was detected in 35 (92%) patients and diabetic retinopathy was
found in 28 (73.6%) patients. CAD was observed in 22 (58%)
patients (females 65%, males 50%, p=NS). During median
follow-up duration of 12.5 months (range 5-38 months), 18
patients expired. Causes of death in 10 out of 18 patients were
congestive heart failure and acute coronary syndrome.
Compared to patients without CAD, the mean age of
nephropathic patients with CAD was higher (60±8.7 years v.
51.6±8.8 years, P< 0.01) and the average age at onset of
diabetes was significantly higher. The findings of this study
indicate that a significant proportion of patients with DN have
CAD, which is the major cause of death in this population.
Relationship of Poor R Wave Progression in
Electrocardiograms and Anterior Wall
Motion Abnormalities on Echocardiography
95
P Jaishankar, V Jaganathan, R Alagesan, M Annamalai,
S Shanmugasundaram, Geetha Subramaniam, S Balaguru,
G Anuradha, S Venkatesan, G Gnanavelu
Poor R wave progression (PRWP) is a common
electrocardiographic (ECG) abnormality encountered in dayto-day cardiology practice. But its value in diagnosing anterior
wall myocardial infarction (AWMI) is not clear. In this context
we analyzed the accuracy of PRWP in diagnosing AWMI.
Electrocardiogram (ECG) was recorded with proper lead
positioning. Fifty patients with PRWP were evaluated for
anterior wall motion abnormalities as an evidence of AWMI.
Patients with chronic obstruction of pulmonary disease
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Indian Heart J 2005; 57: 381–425
(COPD), left ventricular hypertrophy (LVH), left bundle branch
block (LBBB) and Wolff-Parkinson-White (WPW) syndrome
were excluded. PRWP was defined by De Mutte criteria. The
amplitude of R wave in lead V2 to V4 are summed and defined
as R wave score. Of the 50 patients with PRWP, 24 (48%) had
AWMI, 15 (30%) had dilated cardiomyopathy (DCM), and 11
(22%) had normal study. Of 24 patients with AWMI, 20 had
R wave score of < 4 mm. Among the patients who had no
wall motion abnormality, only one had R wave score of < 4
mm.
ratio of LDL-c/HDL-c, TC/HDL-c and also low HDL are
significant predictors of CAD.
Endothelial Dysfunction in Young First
Degree Relatives of Patients
with Coronary Artery Disease
97
S Dwivedi, S Sharma, G Mehrotra, VG Ramachandran
University College of Medical Sciences, Delhi
AWMI
DCM
Normal
R wave score
(range)
R wave score
(mean)
2 - 4.8 mm
1.5 - 4.2 mm
3.5 - 7.5 mm
3.5 mm
2.8 mm
5.8 mm
AWMI: anterior wall myocardial infarction; DCM: dilated cardiomyopathy
We conclude that, in patients with PRWP, R wave score of less
than 4 mm is a useful ECG parameter to identify patients with
AWMI.
Serum Lipid Profile in Patients with Acute
96
MR Niaki, MT Salehi Omran, F Jalali,
M Rahmani
Shahid Beheshti Hospital, Babol University of Medical Sciences, Iran
Coronary artery disease (CAD) is one of the common health
problems being faced by the world. Hyperlipoproteinemia
(HLP) has significant role in its generation. The present study
was undertaken for analyzing the lipid profile in acute
myocardial infarction (AMI). This prospective study was
conducted on 279 patients (194 male) with AMI in the age
range of 30-70 years, admitted in our hospital. AMI was
confirmed by typical chest pain, electrocardiogram (ECG)
changes and raised levels of cardiac enzymes. The control
group consisted of 505 people (277 male) with ages between
36-65 years without any symptoms or signs of CAD. The
patients and controls were subdivided in two groups, over and
up to 50 years old. Serum lipids were measured at admission
and two months after MI. The lipid profile included serum
triglyceride (TG), total cholesterol (TC), high-density
lipoprotein cholesterol (HDL-c), low-density lipoprotein
cholesterol (LDL-c), LDL-HDL ratio and TC-HDL ratio. The
patients under 50 years had higher mean TC (p< 0.03), LDLc/HDL-c (p< 0.02) and TC/HDL-c (p< 0.01) compared to
control groups but serum levels of HDL-c (p< 0.01), and TG
(p< 0.05) were lower than control group. In cases over 50
years, the mean levels of LDL-c/HDL-c (p< 0.01) and TC/HDLc (p< 0.004) were higher but TG and HDL-c (p< 0.001) were
lower than in control group. There were no significant
differences in TC and LDL-c in this group. In our study, higher
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Endothelial dysfunction (ED) is considered to be the
precursor of atherosclerosis. Atherosclerosis often starts at an
early age of 15 years and gets accelerated in those who have
family history of premature cardiovascular disease (CVD) and/
or smoking. Increased carotid intima media thickness (CIMT),
diminished flow-mediated dilation (FMD), altered ankle
brachial index (ABI), increased C-reactive protein (CRP) are
said to be the clinical markers for ED. To test the above
hypothesis we studied 40 documented patients of coronary
artery disease (CAD) ≤ 60 years and 40 of their progeny/
siblings aged ≤35 years. Another 25 healthy age- and sexmatched controls and 25 of their progeny/siblings were also
studied. Each subject was assessed in detail regarding smoking,
hypertension (JNC-VII), diabetes (ADA, 2003), body mass
index (BMI), waist-hip ratio (WHR), lipid profile [low-density
lipoprotein-cholesterol (LDL-c), high-density lipoproteincholesterol (HDL-c), triglycerides (TG)], C-reactive protein
(CRP), CIMT, FMD, ABI and response to cold pressor test (CPT).
The salient observation are shown in the table.
Parameters
Group 1
(CAD)
(n=40)
53±6.3
Group 2 (progeny/
sibling of CAD)
(n=40)
24.9±6.3
26 (65)
11 (27.5)
20 (50)
8 (20)
8 (20)
29 (73)
9 (36)
0
18 (72)
4 (16)
0
14 (56)
BMI
WHR
24±3.3
0.97±0.07
23.3±2.7
0.92±0.08
21.1±1.6
0.85±0.03
20.77±1.6
0.85±0.05
Diabetes
Pre-diabetes
LDL (mg/dl)
13 (33)
5 (12.5)
137.1±42.4
3 (7.5)
14 (35)
122.2±76.3
0
2 (8)
80.61±16.7
0
1 (4)
76.4±11.5
14 (35)
0.93±0.3
3 (7.5)
0.64±0.1
2 8)
0.51±0.2
0
0.44±0.1
FMD
5.1±3.1
8.6±3.9
ABI
1.00±0.1
1.04±0.08
(Figures in parentheses indicate percentage)
9.2±2.5
1.12±0.11
11.5±2.0
1.09±0.04
Mean age (yrs)
Smokers
HTN
Pre-HTN
CRP>6
CIMT
Group 3
Group 4
(controls) (progeny/sibling of
(n=25)
controls) (n=25)
54.2±3.6
25.0±4.1
HTN: hypertension; BMI: body mass index; WHR: waist - hip ratio; LDL: low - density
liloprotein; CRP: C- reactive protein; CIMT: carotid intima media thickness; FMD:
flow - mediated dilation; ABI: ankle brachial index
Smokers had siginificantly increased CIMT and decreased FMD
compared to non-smokers in CAD patients as well as controls.
Our data indicate that significant number of young progeny/
siblings of CAD subjects have evidence of ED and pre-clinical
atherosclerosis warranting lifestyle changes at adolescent age.
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Should Statins Form Part of Therapy in
Unstable Angina?
98
VK Katyal, SB Siwach, S Singh, N Chadha, Jagdish
Post Graduate Institute of Medical Sciences, Rohtak
Unstable angina is associated with increased risk of major
adverse coronary events (MACE) and half of these events occur
in first 6 months after onset of instability in coronaries. Despite
various medical versus interventional strategies of treatment,
the incidence of MACE remains high. Newer options viz.
addition of statins in acute phase hold promise in reducing
these events. We designed this study in which 20 mg of
simvastatin was administered to alternate patient of unstable
angina (UA) / non-ST elevation myocardial infarction
(NSTEMI). They were divided into two groups of 50 patients
each – Group A receiving statin and Group B not given statin
in addition to usual line of treatment. MACE occurring during
hospital admission and at 30-day were studied. Primary end
points included death, non-fatal myocardial infarction (MI),
or recurrent angina at the end of 48 hours and secondary end
points of death, non-fatal MI or recurrent angina at discharge
and 30-day follow-up after acute onset. Demographic
characteristics of two groups in relation to age, sex, severity
of UA, risk factor profile including risk stratification of UA,
hemodynamics, transaminase levels and lipid profile were
comparable. Recurrent angina (13.3 v. 3.3%) and left
ventricular failure (LVF) (10 v. 3%) occurred more frequently
in patients not receiving statins during hospital stay. However,
on further risk stratification of UA, MACE occurred more
frequently in high risk patients (31 v. 6%, RR 0.28, 95% CI
0.13-0.59) if the patient was deprived of statin therapy during
acute stage (hospital stay). There was no difference in other
primary events during hospital stay in 2 groups. At the end of
30 days, recurrent ischemia was noted in 23% versus 16.6%
patients not given statin. There was no difference in other
events at the end of 30-day follow-up. All fractions of lipids
fell significantly in simvastatin group at the end of 30-days
(p<0.001). Statins have “pleiotropic” effects apart from longterm effects on lipids and atherosclerosis which has prompted
its use in acute phase of coronary instability. Such effects are
modulation of endothelial dysfunction, local inflammatory
response and exaggerated thrombogenic tendency. These
effects are likely reasons of benefit of statin therapy in high
risk patients in our study.
Adjunctive Coenzyme Q-10 Therapy
in Cases of Acute Coronary Syndrome
99
Adarsh Kumar, RK Sharma, Pushpa Devi, Varun Mohan
Government Medical College/GND Hospital, Amritsar
Acute coronary syndrome (ACS) has a bad prognosis. Some
of the recent studies have shown beneficial effect of coenzyme
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(Co) Q-IO in the acute MI (STEMI). However, it has not been
tried in ACS. CoQ-I0, by improving cellular bioenergetics and
its antioxidant effects may slow progression of atherosclerosis
with plaque stabilization effect. As most of the patients of ACS
are also on statins which, by blocking the mevalonate pathway
reduce CoQ-I0 levels. Supplementing CoQ10 with statins may
be helpful and reduce their undesirable effects. To evaluate
the effect of addition of CoQ-I0 to conventional treatment of
ACS (nitrates, antiplatelets, low molecular weight heparins and
statins etc.) (Group I) as compared to conventional treatment
alone (Group II). 217 cases of ACS diagnosed by clinical
examination, ECG, cardiac enzymes and echocardiography for
regional wall motion abnormality (RWMA) admitted in
coronary care unit (CCU) were studied. Group I consisted of
116 ACS cases (males: 67%, females: 33%; age range: 38.376.4 years, mean of 58.7 years) and were given 150 mg oral
CoQ-l0 per day in addition to the standard treatment for 6
months. Group II had 101 ACS cases (males: 63.3%, females:
36.7% age range: 33.4-79.3 years, mean 60.7 years) were
given standard treatment alone. The follow-up period was 6.112.3 months mean of 6.8 months. Comparison of end points
in treatment group I and control group-II is shown in the Table.
Parameter
Gp I (with CoQ10) Gp II (standard
therapy)
p value
Symptomatic improvement
on anginal scoring system
75/116
64.6%
48/101
47.52%
<0.05 (S)
Development of significant
LV dysfunction at 6 months
follow-up
6/116
5.2%
10/101
9.90%
<0.05 (S)
Need for revascularization
by PTCA/CABG
26/116
24.4%
37/101
36.63%
<0.00l (S)
Mortality at months
6/116
5.17%
7/101
6.93%
0.05(NS)
To conclude, adjunctive CoQ-I treatment in ACS is beneficial
on short to medium-term basis. Although the mortality
reduction is also there, this is not statistically significant.
A Clinical Trial of Intravenous followed by
100
Oral Nicorandil to Evaluate its Safety and
Efficacy in Patients with Unstable Angina and
Non-ST Elevation Myocardial Infarction, in
Comparison with Intravenous followed by
Oral Nitrates
Soumitra Kumar, Kumar Sankar Poddar, Subir Ghose
Vivekananda Institute of Medical Sciences, Kolkata
The purpose of this study was to find out the efficacy, safety
and benefit, if any, in short-term mortality and morbidity of
intravenous (IV) and oral nicorandil in comparison to IV and
oral nitrates in patients with unstable angina and non-ST
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elevation myocardial infarction (NSTEMI). Thirty patients
(between 35 to 70 years) with acute coronary syndrome (ACS)
[unstable angina (UA) and NSTEMI] selected as per ACC/AHA2002 Guidelines for UA were randomly divided into two equal
study groups. One group received IV nicorandil (2-6 mg/hour)
and other group IV nitroglycerine (5-10 µg/min) followed by
oral nicorandil (5-10 mg twice daily) and nitrates (20 mg twice
daily), respectively along with other conventional antianginal
treatment. Each patient had serial electrocardigram (ECG),
cardiac enzymes (CPK-MB and troponin-T), echocardiography
and routine laboratory investigations. Concomitant
medication administered was recorded and patients were
followed-up for recurrence of chest pain, progression to STEMI,
need for revascularization and death up to 1 month after
admission. Twenty-three patients till date (11 in the nicorandil
group and 12 in the nitroglycerine group) have completed the
trial. Symptomatic relief from chest pain has been observed in
63% in the nicorandil group and 58% in the nitrate group
while 18% in the nicorandil group had recurrent angina
compared to 25% in the nitrate group. The results that are
available in this ongoing study show that nicorandil (IV
followed by oral) is comparable to nitroglycerine in terms of
short-term safety and efficacy.
conditions as follows:
LVH/LBBB
Early repolarization pattern
Acute pericarditis
Myocarditis
Acute pulmonary thromboembolism
Hyperkalemia
Post-MI ventricular aneurysm
12
10
6
1
1
1
1
In conclusion, in intensive care units, it is not rare to find
patients with ECG showing various changes simulating
infarction pattern without actually having suffered an AMI.
Prognostic Value of Pre-Discharge
Electrocardiographic Measurement of
Infarct Size after Thrombolysis
102
Prabhakar C Koregol, AU Mahajan, B Sreenivasa,
G Rajyadaksha, ME Yeolekar
Mumbai
Study of ST Elevations in Electrocardiogram
in Absence of ST Elevation Myocardial
Infarction in Cardiac ICCU Setting
101
Prabhakar C Koregol, B Sreenivasa, ME Yeolekar,
AU Mahajan
Mumbai
Though the electrocardiogram (ECG) is used as first line
diagnostic test in patients with acute coronary syndrome
(ACS), significant number of patients have normal ECG despite
ACS and converse is also true. We undertook this study to look
at the incidence of ECG suggestive of ST elevation myocardial
infarction (STEMI) in patients without actually having suffered
an acute myocardial infarction (AMI). We studied 400 patients
admitted in ICCU with symptoms suggestive of ACS and ST
segment elevation in ECG, from June 2004 to June 2005. Serial
ECGs, serial cardiac enzymes (CK-MB, troponin-T) and twodimensional echocardiography echo (2D) were done in all
patients. Those patients who did not show evolution of ECG
changes over time, nor significant changes in enzyme levels
no regional wall motion abnormality (RWMA) on
echocardiography were evaluated for other alternative
diagnoses for ST segment elevation. In our study, 32 (8%)
patients had ST segment elevations secondary to other
A.p65
419
In the era of exponentially growing coronary artery disease
(CAD) and equally rapidly expanding investigations for risk
stratification and treatment, electrocardiogram (ECG) still
holds a very strong position at every stage of decision-making.
We assessed the ECG myocardial infarction (MI) sizing score
(Selvester QRS Score) at hospital discharge as a predictor of
outcome. We included the patients admitted to our hospital
between January 2004 - December 2004 and whose 6th
month/until death follow-up data was available. A total of 186
patients were included. The patients were classified into those
with score of 0-9 and those with score ≥10. The end points
were 30-day and 6-month major adverse cardiac events
(MACE). There was no statistically significant demographic
difference between two groups. ECGs were scored
independently by 3 interpreters. Patients with QRS score ≥10
had significantly higher mortality at 30 days than those with
QRS score 0-9 (16.3% v. 4.1% p<0.001) and also higher
mortality at 6 months (21% v. 7%). There was no significant
difference in chest pain or hospitalization for acute coronary
syndrome between two groups (29% v. 18% p=0.07) at 6
months and (33% v. 39%, p=0.06) at 30 days. Utilization of
coronary angiography did not differ significantly between 2
groups (37.8% v. 39.2, p=0.69). Readmission for acute left
ventricular failure was higher for the group with score ≥10
(15.9% v. 10.6%, p=0.03) but there were no significant
difference at 6 months. Our study shows that stratification of
patient after acute MI with widely available ECG score can
predict short - and intermediate-term prognosis specially with
regard to mortality.
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Premature Coronary Artery Disease and its
Association with Conventional
Cardiovascular Risk Factors
103
RR Kasliwal, A Kulshreshtha, S Agrawal, M Bansal,
N Trehan
Incidence of coronary artery disease (CAD) is increasing
in younger individuals in India as compared to developed
nations. However, it is not known what risk factors are
specifically associated with CAD at young age. We studied
1000 consecutive patients undergoing coronary artery bypass
surgery (CABG) at our center between June 2004 and
September 2004. Complete information regarding their
clinical characteristics and conventional cardiovascular risk
factors was obtained. Of the 1000 patients studied, 939
(93.9%) were > 45 years of age (mean age 60.98±8.37 years)
and only 61 (6.1%) were <45 years (mean age: 40.57±3.65
years). The two groups were not different with respect to male
gender, body mass index (BMI) and history of smoking.
Hypertension and diabetes were significantly more common
in patients ≥ 45 years old. On the other hand, patients < 45
years of age had significantly higher total (TC) and low-density
lipoprotein (LDL) cholesterol, significantly lower high-density
lipoprotein (HDL) cholesterol and significantly greater
prevalence of family history of premature CAD.
Parameter
≥45 years old < 45 years old p value
(n =939)
(n=61)
828 (88.2%)
56 (91.8%) 0.392
25.77±4.1
25.74±4.2 0.960
673 (71.7%)
36 (59.0%) 0.035
457 (48.7%)
18 (29.5%) 0.004
Male gender
BMI (kg/m2)
Hypertension
Diabetes mellitus
Family history of
premature CAD
176 (18.7%)
23 (37.7%) <0.001
Smoking
363 (38.7%)
33 (54.1%) 0.053
Total cholesterol (mg/dl) 140.8±38.9 160.87±50.5 0.001
LDL cholesterol (mg/dl) 79.31±29.3 101.51±43.9 <0.001
HDL cholesterol (mg/dl) 36.47±8.8
32.04±7.4 0.001
Triglycerides (mg/dl)
144.19±65.4 162.8±62.0 0.061
In the present study, CAD at young age was found to be
significantly associated with family history of premature CAD
and dyslipidemia as compared to hypertension and diabetes
which were commoner in older individuals. A low proportion
of young patients undergoing CABG in the present study is
not a true reflection of the prevalence of premature CAD in
the community, which needs to be elucidated by further
studies.
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A Study of Myocardial Infarction in Type 2
Diabetes Mellitus
104
HG Ashoka, BS Patil, NS Hiregoudar
SDM College of Medical Sciences & Hospital, Dharwad
Diabetes is a common chronic disease with far reaching
implications. It is estimated that 25 million Indians currently
suffer from diabetes mellitus. Further, the projections indicate
that Indians would be the largest group of diabetics by the year
2025 AD. Cardiac involvement in diabetes commonly
manifests as coronary artery disease (CAD) and less commonly
as diabetic cardiomyopathy and autonomic cardiovascular
neuropathy. Approximately 75% of the cardiovascular deaths
attributed to diabetes are directly related to CAD. The aim of
this study was to delineate the clinical profile of acute
myocardial infarction (MI) in Type 2 diabetes mellitus patients.
This study was undertaken in a teaching hospital where 100
cases of MI, 50 diabetics and 50 non-diabetics were studied.
MI in diabetics occurred at a significantly younger age group.
Recurrent MI was commonly seen in diabetics. Diabetic MI
patients were more likely to present with cardiogenic shock
(16% v. 0). Left ventricular ejection fraction (LVEF) was
significantly lower in diabetics as compared to non-diabetics.
In-hospital mortality was significantly higher in diabetics as
compared to non-diabetics. Hence myocardial infarction has
to be considered as one of the differential diagnosis even in
young diabetics who present with chest pain/discomfort, howsoever less severe it may be. Congestive heart failure occurs
more frequently in diabetic MI patients, which is a major cause
of mortality, and has to be treated aggressively.
Prognostic Significance of Left Atrial Volume
105
in Acute ST Elevation Myocardial Infarction
P Jaishankar, V Jaganathan, R Alagesan, M Annamalai,
A Balaguru, G Gnanavelu, S Venkatesan
Madras Medical College and Government General Hospital,
Chennai
In patients with ST elevation myocardial infarction (STEMI),
diastolic dysfunction assessed by Doppler echocardiography
provides additional prognostic value. Doppler variables are
affected by multiple factors and may change rapidly. In
contrast, left atrial (LA) volume is less influenced by acute
changes and reflects subacute diastolic function. This may be
of importance when one assesses risk in patients with STEMI.
This study aimed to evaluate the prognostic value of LA volume
in acute STEMI. Sixty patients admitted in our hospital with
acute STEMI during March to April 2005 constituted the study
population. Mean age of the patients was 48 years. Malefemale ratio was 1.8:1. They were evaluated with
echocardiography within 48 hours after admission for left
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Indian Heart J 2005; 57: 381–425
ventricular (LV) systolic and diastolic function and LA volume
index. LA volume was calculated by using ellipsoid method,
using the formula (4/3×22/7×L/2×D1/2×D2/2). LA volume
was corrected to body surface area. The LA volume was
considered to be normal if it was < 26 ml. Patients were divided
into two groups based on LA volume (Group A >32 ml/m2,
Group B <32 ml/m2). Patients were followed for one month.
The prevalence of systemic hypertension was equal in both
groups. The difference in mortality between the two groups
was significant independent of site of infarction.
Group A
Group B
No. of Pts.
LA volume
Mortality
12 (20%)
48 (80%)
> 32 ml/cm2
< 32 ml/cm2
2 (16%)
Nil
We conclude that in patients with STEMI, increased LA
volume, determined within the first 48 hours of admission, is
an independent predictor of short-term mortality and provides
additional prognostic information.
TIMI Score for Risk Assessment in Unstable
Angina/Non-ST Elevation Myocardial
Infarction – An Observational Study
106
Cherian George, Naveen, BC Isaac, GG Shetty, K Varghese,
CB Patil, SS Iyengar
St John’s Medical College, Bangalore
Risk stratification of patients with unstable angina (UA) and
non-ST elevation myocardial infarction (NSTEMI) is useful in
assessment of prognosis and delivery of optimal medical care.
The current study reports the application of thrombolysis in
myocardial infarction (TIMI) risk score in 59 consecutive
patients admitted with UA/NSTEMI to our hospital. (The risk
assessment of the patients was made based on the TIMI risk
score to obtain a score of 0-7). The mean age of the patients
was 61±9.9 years and 34% were women. Hypertension
(73%), diabetes mellitus (61%) and dyslipidemia (64%) were
the common risk factors present; 19% were smokers and 25%
had family history of premature coronary artery disease(CAD);
31% had elevated serum cardiac markers and were diagnosed
to have NSTEMI. Ischemic electrocardiographic (ECG) changes
were present in 52%. The number of patients with risk score
of 0/1, 2, 3, 4, 5 and 6/7 was 4, 15, 15, 19, 4 and 2
respectively. No patient with risk score of 0/1 had NSTEMI
while 50% of patients with scores more than 5 had the same.
The severity of CAD also showed an increasing trend as the
risk score increased. No end points - death, MI or urgent
revascularization were present in patients with scores 0-3. Out
of the 3 deaths, one patient had a score of 6/7 and two patients
had score of 4. A trend toward increasing events was obtained
as the score increased. We conclude that the TIMI risk score is
a useful tool for predicting the outcome of patients with UA/
NSTEMI though larger studies are required to calculate the
exact numerical risk associated with each score.
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Day Care Angiography
Yogendra Singh, R. Chakraborty, Aftab Khan,
Suvro Banerjee, Debeshis Ghosh, Praksh C Mondal,
Arunangshu Ganguly
107
Apollo Gleneagles Hospitals, Kolkata
Diagnostic coronary angiography (CAG) has very small but
definite mortality which can go up in a subgroup of high risk
patients, that is why it is done as an in-patient procedure which
makes it a bit inconvenient for the patients. CAG is one of
costliest investigation in private care setting. To bring down
the cost of the procedure and make it more convenient and
acceptable to the patients we introduced a concept of day care
angiography. We did 126 day care angiograms from February
2005 to May 2005. Mean age of patients was 50±12 years
(male 112, female 14). Thirty-two (25.4%) patients had
history of myocardial infarction (MI), 2 (2.3 %) were post coronary artery bypass grafting (CABG). CAG was done by
various routes depending on physician's preference, right
radial 38 (30.2%), left radial 6 (4.7%), right ulnar 2 (1.6%),
left brachial 3 (2.4%), femoral 77 (61.1%). All patients received
2500 U unfractionated heparin before the procedure. There
was no mortality. One patient had to be admitted because of
left ventricular failure (LVF) after CAG, 4 (3.2%) patients had
small hematoma but all were discharged the same day after
the cardiologist's visit. CAG was done with 4 F system in 23
(18.3%) and 5 F system in 103 (81.7%) patients as per
physician's preference. In one patient we had to change the
sheath from 4 F to 5 F due to inadequate visualization of
coronary arteries. Day care option was chosen by patients
without any consideration of the risk profile which is clearly
evident from risk profile findings and recommendation; 29
(23%) patients had triple vessel disease, 22 (17.4%) double
vessel disease, 37 (29.4%) single vessel disease; 35 (27.8%)
had normal coronaries, 3 (2.4%) minor coronary artery
disease (CAD) and 33 (26.2%) got advice of CABG, 51 (40.5%)
PTCA, 42 (33.3%) medical management. Our day care is
primarily being managed by trained nursing staff with oncall cardiologist. This study shows that day care angiogram
can be done like any other outpatient investigation with
acceptable mortality, morbidity and at lower cost.
Risk Factor Assessment in Patients with
Myocardial Infarction at a Young Age
108
A Roy, D Prabhakaran, R Lakshmy, S Das, R Gupta,
M Sharma, P Jeemon, KS Reddy
All India Institute of Medical Sciences, New Delhi
Coronary artery disease (CAD) is known to occur at a
younger age in Indians leading to a major loss of potentially
productive person-years. Early onset CAD usually occurs in
the absence of traditional risk factors and its cause remains
largely unknown. All consecutive consenting patients of acute
myocardial infarction (MI) presenting within 24 hours of chest
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Indian Heart J 2005; 57: 381–425
pain onset to our coronary care unit (CCU) between 19992002 were included in this study for conventional and novel
risk factor assessment. The risk factors in patients with MI at a
young age (<45 years) were analyzed and compared to those
with the other patients of MI. Detailed history, physical
examination and fasting blood sampling was obtained within
24 hours of admission. A total of 178 patients of MI were
admitted of which 63 were < 45 years of age (mean age: 39.7
years; males 94%). Among young patients with MI, 62% were
current smokers, 25% had history of hypertension, 10% had
diabetes. The mean blood glucose was 125.8 ± 84.7 mg/dl,
mean total cholesterol was 156.6±83.8 mg/dl, mean highdensity lipoprotein (HDL) cholesterol was 32.0 ±16.4 mg/dl,
mean low-density lipoprotein LDL cholesterol was 96.2±61.1
mg/dl, mean triglyceride was 152.0±133.5 mg/dl, mean
apolipoprotein B/ apolipoprotein A ratio was 0.84±0.6, mean
plasma lipoprotein(a) [Lp(a)] was 45.4±62.4 mg/dl, mean
homocysteine was 15.2±13.0 µmol/L. When compared to the
other patients admitted with MI during this period, the young
patients had a conventional risk profile similar or better than
the older patients except smoking rates which were higher
among younger group but did not reach statistical significance.
Plasma homocysteine levels were also similar to that in the
older patients. However, plasma Lp(a) levels were significantly
higher in the patients with MI at a young age compared to the
older patients (45.4±62.4 mg% v. 25.1 39.7 mg%, p<0.0001).
Risk factors [(except for Lp(a)] of AMI were similar in young
and old patients.
Thrombolytic Window and Clinical Outcome
in Patients with ST Elevation Myocardial
Infarction
109
G Jeyakumar, V Amuthan, S Palanichamy, S Murugan,
RA Janarthanan, S Balasubramanian, Mohamed S Naina,
S Balashankar, G Prathapkumar, P Kannan,
M Anandhan
Government Rajaji Hospital, Madurai Medical College, Madurai
The aim of the study was to assess the clinical outcome in
patients with ST elevation myocardial infarction (STEMI) in
relation to thrombolytic window. Patients admitted with acute
STEMI in our ICCU between November 2004 to May 2005 who
were thrombolyzed were included in this study to find out the
relation of thrombolytic time window with ejection fraction
(EF), functional capacity and anatomical lesions. There were
100 patients who were divided into 4 groups depending on
the time window (time of onset of chest pain to thrombolysis:
1-3 hours , 3-6 hours, 6-12 hours, 12-24 hours. Thrombolysis
was done using standard protocol with 15 lakh units of
streptokinase in 100 ml of normal saline over 60 min.
Echocardiographic study was done in all patients on day 4 and
left venticular ejection fraction (LVEF) was calculated by
modified Simpson’s technique. Pre-discharge symptom limited
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treadmill test (TMT) was done in 47 (47%) of patients. All
who underwent TMT were subjected to coronary angiogram.
The results are shown in table.
Throm. No. of
Wind.
cases
1-3
3-6
6-12
12-24
9
19
62
10
50% ST
resolution
EF
METS
IRA - % of
occlusion
Death
5/9
52±3.5
7/19 50.05±2.2
12/62
47.2±2.1
2/10
41±3.5
7.1±0.9
6.5±0.7
5.1±0.9
4.2±0.3
66±3.5 (4)
69.5±3.5(8)
72±5.5(30)
85±4.5(5)
1
3
5
5
IRA: Infarct-related artery; EF: ejection fraction
We conclude that patients who have been thrombolyzed within
6 hours of onset of chest pain have good EF and moderately
good functional capacity and lesser residual anatomical
obstructions. Patients who were thrombolyzed later had poor
EF, functional capacity and higher percentage of anatomical
obstruction. So patients’ education and physicians' awareness
is important for early thrombolysis in myocardial infarction
patients for better outcome.
Safety and Utility of Left Transradial
Coronary Angiography in a Mobile Cardiac
Catheterization Laboratory
110
Sanjay K Chugh, RB Panwar, RR Kasliwal,
Gaurav Minocha, Vivek Tandon, Naresh Trehan
The mandatory bed-rest following manual compression
after femoral access for coronary angiography limits turnover
of patients in a busy facility. The aim of this study was to assess
the safety and utility of left radial access for coronary
angiograms in a mobile cardiac catheterization laboratory
(MCCL) (GE systems) in a 14-bedded facility at a Medical
College Hospital in Bikaner, Rajasthan. Patients with acute
myocardial infarction, heart failure, hemodynamic instability
and rest angina in the preceding 72 hours were excluded.
Radial artery (RA) diameter (color Doppler ultrasound) was
measured. Catheters with radial curves were not available.
Judkin's catheters were used. Amplatz catheters were used only
as an alternative if Judkin's did not fit. Procedure time was
recorded (RA puncture to end of angiogram). Hemostatic
compression bandage was removed at 0.5 hours unless
bleeding persisted. No patient was kept in-hospital beyond 4.5
hours unless clinically necessary. Mean age was 50.2±8.6
years. Judkin's catheters were used in 95.3% of 178 (males:
161, females: 17) consecutive transradial coronary
angiograms (TRCA) through left radial access (LRA). RA
diameter was 2.2±0.4 mm. In 6% (n=11) >1 catheter
exchange was done. Catheter manipulation was difficult in 2
cases with subclavian artery (SA) tortuosity (1.1%).
Significant RA spasm occurred in 2.2% (n=4). Average daily
procedure volume increased by 35% from 13 (12-14) to 20
(19-21); each TRCA requiring an average of 15±5.5 min. 96%
patients were discharged home 3.9 hours after procedure.
There were no major complications. In a MCCL facility in semi-
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rural India, left TRCA is safe. Because procedures are shorter
and patients can be discharged home earlier, more procedures
can be accommodated per day. Incidence of SA tortuosity and
RAS is also low with this approach.
Clinical, Biochemical and Angiographic
Profile of Young (≤
(≤40 Years) Patients with
111
A Shah, S Sreenivasan, H Shah, C Lanjewar, A Nabar,
P Nyayadhish, P Nathani, P Kerkar
King Edward VII Memorial Hospital, Mumbai
When compared to older patients, young adults (≤40 years
old) with acute myocardial infarction (AMI) may have different
risk factor and clinical profile as well as a different prognosis.
Besides studying the clinical and angiographic profile of young
patients with AMI, we investigated the serum level of certain
moieties of lipoproteins and amino acids, which might
contribute to the occurrence of acute coronary event early in
life. Among 73 patients (mean age: 32.5±3.3 years, 67 males)
studied over a period of 18 months the youngest individual
was 22 years old. The incidence of smoking (52%) and positive
family history of atherosclerotic affection of coronary/
cerebral/peripheral vessels at young age was low. Other
conventional risk factors, diabetes (10%) and hypertension
(11%) were also less common in these young patients. Anterior
wall (73%) was the commonest site affected. More than mild
hyperhomocysteinemia (>30 mg/dl) and elevated lipoprotein
(a) levels (>30 mg/dl) were found in 71% and 36% of the
patients, respectively. Markers of thrombophilia and vasculitis
(anti-phospholipid antibodies, HBsAg, ANA, ds DNA) are rare
causes of myocardial infarction in young patients. Single vessel
disease (54%) was common and left anterior descending artery
(84%) was the most common culprit vessel. On elective
coronary angiography, the culprit vessel was found to be
recanalized in the majority (70%). A large number of young
patients (85%) with AMI have well preserved left ventricular
(LV) function.
Clinical Utility of Troponin-T Levels and Wall
112
Motion Abnormality in Acute Coronary
Syndrome
NN Khanna, A Lalchandani, SK Saxena, P Neelam,
G Preethi, P Sondhi, A Agarwal, V Agarwal,
M Shameem, U Pandey
GSVM Medical College, and Escorts Heart Centre, Kanpur
Echocardiography is a useful non-invasive imaging
technique for the assessment of ischemic heart disease.
Ischemia leads to wall motion abnormality which can be
detected by echocardiography. Our study aimed at assessing
the combined utility of troponin-T (Trop-T) levels and wall
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motion abnormality detected by echocardiography as a
predictor of adverse cardiac events. Serial Trop-T levels and
echocardiographic images were evaluated in 100 patients with
chest discomfort. Trop-T was done at presentation and
subsequently at 6 hourly interval for 24 hours.
Echocardiography was done to detect wall motion abnormality
in the same patients. Of the 100 patients (males: 60, female:
40), Trop-T was increased 23 patients with acute myocardial
infarction (MI) and 15 of 41 patients with unstable angina.
None of the patients with stable angina had an increased TropT levels. 19 of the 23 patients with acute MI had wall motion
abnormality detected by echocardiography and 10 of 41
patients with unstable angina had wall motion abnormality.
The combination of Trop-T levels with echocardiography gave
a positive predictive value of 84% for adverse cardiac events
and a negative predictive value of 90% in the follow-up period.
The combined result of Trop-T and echocardiographic imaging
is a more powerful predictor of adverse cardiac outcome than
isolated results.
Endothelial Dysfunction and Intima-Media
Thickening in Coronary Artery Disease
113
R Ajay Kumar, S Thanikachalam
Risk stratification for predicting future cardiovascular
events and diagnosis of occult vascular disease is a complex
process. Concomitant non-invasive measurement of arterial
endothelial dysfunction and intima-media thickness (IMT)
would help a long way to assess the functional and structural
status of the vasculature. This study was structured to assess
the diagnostic utility of endothelial function assessment by
brachial artery flow-mediated dilation (FMD) technique using
high resolution ultrasound and compare it with carotid and
femoral arterial IMT in coronary artery disease (CAD). In this
prospective study, 75 men and women aged 18-75 years
participated. Subjects were classified into two groups. Fifty
consecutive patients who had significant CAD in coronary
angiography (>50% lesion at least in 1 major vessel) were
included in the study group. 25 healthy, age and sex-matched
subjects who had no history, symptoms or known risk factors
of CAD, negative stress test and normal echocardiogram were
enrolled in the control group. The non-invasive determination
of endothelial function was performed with brachial artery
FMD technique. The brachial artery diameter was measured
at rest, during reactive hyperemia i.e. post-cuff occlusion
(endothelium-dependent vasodilation), and after the
sublingual administration of nitroglycerine (endotheliumindependent vasodilation). Vessel diameters after reactive
hyperemia (FMD) and nitroglycerine administration (NMD)
were compared with the resting diameters and expressed as a
percentage of the lumen diameter at rest. All subjects
underwent IMT assessment of carotid (average of 12 IMT
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Indian Heart J 2005; 57: 381–425
readings) and femoral arteries (average of 8 IMT readings).
Results are given in the table.
Variables
Study group (n=50)
FMD%
5.81 ± 1.98
NMD%
19.47 ± 5.06
FMD / NMD ratio
0.30 ± 0.08
Carotid IMT (mm)
1.11 ± 0.11
Femoral IMT (mm)
1.17 ± 0.13
Control group (n=25)
17.56 ± 3.29
23.77 ± 4.69
0.74 ± 0.06
0.72 ± 0.08
0.74 ± 0.11
p value
<0.0001
<0.001
<0.0001
<0.0001
<0.0001
To conclude, there is very highly significant difference
(p<0.0001) in FMD%, FMD/NMD ratio and carotid and
femoral IMT between established CAD patients and normal
age- and sex-matched control population. Hence, these
parameters are worth measuring in patients going for
coronary angiography, specially if one of the screening tests is
negative. Further the abnormal endothelial function observed
by FMD could point toward a generalized impact on the arterial
tree by multiple risk factors and the extensive nature of the
vascular disease and its implications.
complications with femoral approach was local hematoma
seen in 18% of cases. One of the main advantages of radial
approach was rapid mobilization, less hospital stay (3.4 hr v.
8.30 hrs). Radial approach was more cost effective. The average
cost of radial approach was Rs. 2,500/- per examination and
of femoral approach was Rs. 4,000/- per examination. The
transradial approach is attractive because of lesser
complications, early mobility and lower cost.
Comparison of Conventional Coronary
Angiography with Non-invasive Multislice
Spiral Computed Tomography for Detection
of Coronary Artery Stenosis
115
H Bajaj, S Mattummal, K Satish, I Mammen,
C Lanjewar, P Nyayadhish, P Nathani, P Kerkar
Comparison of Percutaneous Radial
Coronary Angiography by Single Tiger
Catheter with Conventional Percutaneous
Femoral Angiography
114
S Dhawan, SC Manchanda, A Mohanty, JPS Sawhney,
Vipin Talwar
Transradial cardiac catheterization promises fewer access
site complications and improved patient comfort due to
immediate ambulation. The purpose of our study was to assess
the comparison of radial versus femoral approach for coronary
angiography with respect to feasibility, safety, quality,
procedure time and cost effectiveness. This study showed high
success rate with both procedures (radial 98%, femoral 100%).
The duration of procedure was longer when radial approach
was used compared to femoral (radial 15.5±2 min, femoral
11±1.2 min). The cannulation time with radial approach was
longer as compared to femoral (radial 67 s±8 s, femoral 45±5
s). The radiation exposure was also longer with radial approach
(5.6+8 min) as compared to femoral approach (4.2+3 min).
The high success rate in our study of radial approach as
compared to other studies was due to use of cocktail regimen
during radial cannulation (nitroglycerine + diltiazem). The
amount of dye used in radial approach was higher as compared
to femoral approach (151 ml compared to 131 ml,
respectively). The total catheter required in radial approach
were 1.6 as compared to femoral approach which required 3.2
catheter. Common complication in radial approach were pain
in arm in 7% and loss of radial pulses in 15%. The common
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This study sought to (i) analyze the efficacy of detecting
atherosclerotic coronary artery disease (CAD) lesions using a
new multi slice computed tomography (MSCT) scanner with
64 detectors and (ii) compare it with conventional invasive
coronary angiography (CICA). Patients who were admitted for
evaluation of atherosclerotic CAD by conventional coronary
angiography at our institution were taken up for MSCT
coronary angiogram with in 48 hours. Those with allergy to
contrast media, elevated serum creatinine levels, irregular
heart beats, unstable hemodynamic condition, prior stent
implantation, coronary artery bypass grafts (CABG), and
contraindication for beta-blocker therapy were not included.
Atenolol was given orally if heart rate was >60 beats/min. This
was an open label and non-blinded study. The MSCT reader
was in the learning curve. Forty-eight patients (51±9 years,
41males) were enrolled; the test was considered inconclusive
in 11 patients due to respiratory artifacts and poor image
quality. Coronary arteries were classified into 15 segments as
per American Heart Association guidelines. A total 555
coronary segments were analyzed, of these 73 were
significantly diseased (>50% diameter stenosis) on CICA. These
significant coronary artery lesions were correctly diagnosed
by MSCT in 62 / 73 (85%) segments. One segment
representing left main, left anterior descending (LAD), right
coronary artery (RCA) each, 2 segments representing left
circumflex (LCx) and three representing posterior descending
(PDA) and posterior left ventricular (PLV) coronary artery each
were wrongly adjudicated as normal. Other 9 (1.6%) segments
were incorrectly classified as significantly obstructed, an
overestimation of the severity of the lesion. Of these 9 lesions,
3 were in LCx, 2 in diagonals and 1 each in LAD, RCA, ramus
and obtuse marginal. Twenty-three of 555 (4.4%) coronary
segments classified unevaluable by MSCT were excluded from
the final analysis; of these 8 were in LCx, 7 in obtuse marginal,
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4 in diagonals, 2 in RCA, 1 each in PLV and PDA. One of the
two significant left main segment lesion was not undetected
by MSCT coronary angiogram. We conclude that MSCT is
highly efficacious for detecting significant coronary artery
lesion with a sensitivity of 85%, specificity of 98%, positive
predictive value of 87% and negative predictive value of 97%.
It is a promising tools to screen for coronary artery disease.
Measurement of Cardiac Troponin-I and
Troponin-T in Patients with Acute
116
MT Salehi Omran, MR Niaki, K Hajian,
SM Ghasemzadeh, F Saberian
Acute myocardial infarction (AMI) is one of the most
common diseases today. This study was undertaken to
determine the level of two important biochemical markers of
AMI, that is, cardiac troponin- I and troponin-T. This study
was a descriptive-analytic study, which was performed on 100
patients in whom—according to criteria of World Health
Organisation diagnosis of AMI was definite. On second day of
admission in coronary care unit (CCU), cardiac markers
including troponin-I using qualitative immunochromatography assay and cardiac troponin-T (cTnT) using
third generation cTnT detection assay (CARDIAC) and also
total creatine kinase (CK) was measured and recorded. This
information were recorded in a special data sheet and then
analyzed by using SPSS, chi sqare and t test. Mean age of
patients was 59.73 years (SD: 12.57). Thirty-eight patients
were women and 62 were men. There were 83 (83%) patients
with positive troponin-I, 97 (97%) patients having troponinT values 0.1 mg/ml (indicating AMI) and also 93 (93%)
patients having total CK value more than normal. Troponin-T
is a more sensitive marker for diagnosis of AMI when
compared with other cardiac markers of AMI during first 24
hours after AMI.
Specificity and Sensivity of Cardiac Markers
in Patients with Acute Myocardial Infarction
117
MT Salehi Omran, MR Niaki, MJ Soleimani, F Saberian
Acute myocardial infarction (AMI) is common disease
today. The present study was done to determine specificity and
sensivity of cardiac markers for diagnosis of AMI . This study
was a descriptive-analytic one, which was performed on 100
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patients in whom—according to criteria of WHO —diagnosis
of AMI was definite. On second day of admission in our
hospital, cardiac markers including troponin-I using
qualitative immunochromatography assay and cardiac
troponin-T using third generation cTnT detection assay
(CARDIAC) and also total creatine kinase (CK) was measured
and recorded for all patients. Also, cardiac markers were
measured in 100 case - controls. The information was recorded
in a special data sheet and then analyzed by using SPSS, chi
sqare and t test. Mean age of patients was 59.73 years (SD:
12.57). Thirty-eight patients were women and 62 them were
men. Eighty-three (83%) of patients had positive troponin-I,
97 (97%) had troponin-T values more than 0.1 mg/ml
(indicating AMI) and also 93 (93%) patients had total CK value
more than normal. Mean age of case control was 51.63 years
(SD: 7.23). 42 cases were women and 58 men. All the casecontrols (100%) had negative troponin I. All of the casecontrols (100%) had troponin-T values < 0.1 mg/ml
(indicating normal value) and also 12 case-controls (12%) had
total CK values more than normal. In our study, for diagnosis
of AMI, specificity of troponin-T, troponin-I and total CK were
100% ,100%, 88% and sensivity of troponin-T, troponin-I and
total CK were 97%, 83%, 93%, respectively.
Measurement of Lipoprotein(a)
in Patients with Acute Coronary Syndromes
and Control Group
118
MT Salehi Omran, MR Niaki, M Hashemi, F Saberian
Shahid Beheshti Hospital,Babol University of Medical Sciences, Iran
Hyperlipidemia is one of risk factors for atherosclerosis.
Treatment of hyperlipidemia decreases the incidence of
cardiovascular disease. The purpose of this study was the
determination of lipoprotein(a) [(Lp(a)] level in patients with
cardiovascular disease and control group. In a case-control
cross-sectional study, the level of Lp(a) was measured with
method of ELISA in 100 patients with acute coronary
syndrome (ACS) and 100 healthy people matched for sex and
age. Then samples were analyzed using SPSS and t test. This
study covered 44 males and 56 females with a mean age of
46.74±13.52 years. Mean Lp(a) level was 26.48±9.36 mg/dl
with no significant difference between sexes but it was
significantly lower in control group (21.37±8.78 mg/dl)
(p=0.031 ). To conclude, owing to difference in Lp(a) level
between patients with acute coronary syndrome and healthy
people, we can use it as a marker or risk factor for
cardiovascular disease.
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Indian Heart J 2005; 57: 426–461
426 Coronary Interventions
Intra-Aortic Balloon Pump Supported
Angioplasty
119
Amresh Kumar, Satyendra Tewari, Sudeep Kumar,
Intra-aortic balloon pump (IABP) supported angioplasty for
hypotensive, unstable patients with left ventricular (LV)
dysfunction is a well-established entity. We present our data
of IABP-supported angioplasty (n=21) from January 2002 to
30 June 2005. Of the 21 patients, 15 had recent myocardial
infarction (MI) (within one week), while 6 had unstable
angina. Their average age was 61.3±9.6 years, 18 were males.
Diabetes was present in 12 (57%), hypertension in 6 (19%),
family history was positive for premature coronary artery
disease (CAD) in 1 (4%), while 8 (38%) were smokers. The
echocardiographic ejection fraction (EF) was 23.3±8.8%.
Single vessel disease (SVD) was present in 10, double vessel
disease (DVD) in 8 and triple vessel disease (TVD) in 3 patients.
Of the 21 patients, 20 underwent successful stenting, while
one patient underwent coronary artery bypass grafting
(CABG). Left anterior descending artery (LAD) was stented in
14, right coronary artery (RCA) in 4, left circumflex (LCx) in 1
and Ramus in 1. In one patient, percutaneous transluminal
coronary angioplasty (PTCA) and stenting to LAD with plain
optimal balloon angioplasty (POBA) to Ramus was done. The
median duration for IABP support was 14 hours (range: 6-32
hours). No death occurred during, or within first 24 hours after
procedure. In-hospital mortality was 3/21 (15.4%), due to
renal failure in one, ventricular fibrillation (VF) and septicemia
in one each. One patient required recurrent admission due to
LV dysfunction and recurrent ventricular tachycardia (VT),
and died 20 days after procedure. At a mean follow-up of 13±6
months in 14 patients, all were asymptomatic with no
incidence of restenosis clinically. We conclude that angioplasty
with IABP support can be conducted safely in a high-risk group
of patients with a good acute and intermediate success rate.
Does Gender Bias Truly Exist in PostAngiolasty Results
120
Mukesh K Sharma, Satyendra Tewari, Sudeep Kumar,
We analyzed our data of a total of 356 females who
underwent coronary angioplasty from January 2002 to
December 2004. Their mean age was 52.8±10.4 years (range:
34-75 years). One fourty-six (41%) patients were diabetic, 196
(55%) were hypertensive, 128 (36%) were dyslipidemic.
Fourty-one (11%) were pre-menopausal females. In 426 target
vessels, 457 stents were deployed. The target vessel was left
anterior descending artery (LAD) in 256 (60.2%), Ramus in 9
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(2.2%) left circumflex (LCx) and obtuse marginal (OM) in 72
(16.9%), right coronary artery (RCA) in 88 (20.5%) and graft
percutaneous transluminal coronary angioplasty (PTCA) was
done in 1 patient. Multi-vessel stenting was done in 70
(19.66%) patients. Of a total 346 patients who were stented,
33 (9.5%) had small coronary arteries (≤2.5 mm). Drugeluting stents were deployed in 244 (53%) lesions and nondrug-eluting stents were deployed in 223 (47%) lesions.
Glycoprotein IIb/IIIa receptor antagonist was administered in
94 patients (abciximab: 61, eptifibatide: 33). At a mean followup of 20.8±10.4 months, 3 patients developed acute in-stent
thrombosis (within 48 hours of procedure) which were tackled
with re-angioplasty with abciximab cover; 2 patients developed
subacute stent thrombosis which was successfully treated with
angioplasty. Twenty-eight (7.6%) patients had in-stent
restenosis out of which 27 patients were successfully treated
with repeat angioplasty and one underwent coronary artery
bypass grafting (CABG). Our data shows that PTCA and
stenting in females has good immediate, short-term and
intermediate results.
Immediate and Long-Term Results of Direct
Stenting of Lesions less than 95% with
Cypher Stents
121
Shuvo Dutta, A Mishra, Tarun Praharaj, AK Kar,
D Kahali, Tanuja De, S Chowdhury, Sudipa Ghosal
BM Birla Heart Research Centre, Kolkata
The objective of this study was to see if polymer-coated
rapamycin stent was affected by friction in direct stenting at
long-term i.e. at ≥ 2 years. Three hundred patients (females:
120) with stenosis ranging between 75% and 95% with
evidence of reversible ischemia underwent direct stening with
Cypher stents in 2.5 mm to 3.5 mm diameter vessels; 50% of
the patients had diabetes, 30% had hypertension, 40% had
dyslipidemia, 40% were smokers and 20% had positive family
history of ischemic heart disease (IHD). Glycoprotein IIb/IIIa
inhibitors were used in less than 5% of patients. Procedural
success was 100% including calcified coronary arteries where
full deployment of stents was done successfully, as assessed by
symmetrial inflation of balloon within lesion. There was no
death or myocardial infarction (MI). All the patients were
followed up for 3 years with treadmill test (TMT) and 185
patients had check coronary angiography (because of positive
TMT). Check angiography revealed 100% patency of all stents.
Although direct stenting requires skill, it has many advantages:
(i) it is a safe procedure with excellent immediate- and longterm results and excludes the trauma and dissection of
predilation with balloon where stenting becomes similar to a
bail out situation in terms of pathophysiology; (ii) it is time
saving; and (iii) there has been 100% long-term success in our
patient group.
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Intracoronary Glycoprotein IIb/IIIa
Inhibitors in Acute Coronary Syndrome
Coronary Interventions 427
122
R Chakraborty, Yogendra Singh, Aftab Khan,
Suvro Banerjee, Debeshis Ghosh, Praksh C Mondal,
Arunangshu Ganguly
Apollo Gleneagles Hospitals, Kolkata
In patients with acute coronary syndrome (ACS)
undergoing percutaneous coronary intervention (PCI),
glycoprotein (Gp) IIb/IIIa inhibitors reduce major adverse
cardiac events. Reports of intracoronary (IC) use of Gp IIb/
IIIa inhibitors in humans are limited to a small number of
patients with angiographically visible thrombus in coronary
arteries and saphenous vein grafts. This did reveal rapid
reduction of thrombus load. Most of the trials had intravenous
(IV) administration of Gp IIb/IIIa inhibitors in PCI.
Intracoronary bolus of Gp IIb/IIIa inhibitors administration
may cause high local drug concentration and may be more
effective than IV bolus. In our centre IC Gp IIb/IIIa inhibitors
were used randomly as per operator’s discretion. We
retrospectively analyzed 30 such patients. Mean age was 55
±12 years with 28 (93.3%) males. Twenty (66.7%) had
unstable angina, 6 (20%) had non-ST segment elevation
myocardial infarction (NSTEMI) while 4 (13.3%) had ST
segment elevation myocardial infarction (STEMI). Target
vessels were 38 in 30 patients. The profile was left anterior
descending (LAD): 18 (60%), left circumflex (LCx): 6 (20%),
right coronary (RCA): 11 (37.7%), ramus: 1 (3%), left main: 1
(3%), and venous graft: 1 (3%). Thirteen (43%) received IC
bolus of abciximab, 8 (27%) eptifibatide and 9 (30%) tirofiban.
Twenty-nine patients received coronary stents. Of them 23
(63.8%) had drug-eluting stent while 13 (36.2%) had bare
metal stents. One patient underwent bypass surgery due to
unfavorable anatomy. All patients received IV heparin (70U/
kg) during the procedure and IV infusion of respective Gp IIb/
IIIa inhibitors for 24 hours. None of our patient had slow flow
at the end of the procedure. There was no in-hospital
complication or any mortality. No major adverse cardiac event
was observed during first 3 months of follow-up. This study
shows satisfactory results of IC bolus administration of Gp IIb/
IIIa inhibitors in acute PCI with no adverse event. Multicentric
randomized trials with IV bolus as a control arm may prove
the superiority of IC bolus administration of Gp IIb/IIIa
inhibitors in ACS.
Coronary Angioplasty in Patients of Chronic
Renal Failure: Is it Really a Thing of Past?
123
Amresh Kumar, Aditya Kapoor, Sudeep Kumar,
Satyendra Tewari, Naveen Garg, PK Goel, Nakul Sinha
From January 2002 to 30 June 2005, a total of 73 patients
with chronic renal failure (CRF) underwent coronary
angioplasty at our center. The mean age was 55±13.6 years,
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59 were male, 49 (67%) were hypertensive, 28 (38%) diabetic,
30 (41%) smokers, and positive family history for premature
CAD was present in 5 (7%) cases. The average cholesterol level
was 154.3±38.2 mg%, triglyceride: 163.3±61.2 mg/dl, highdensity lipoprotein (HDL): 28.9±8.2 mg/dl, low-density
lipoprotein (LDL): 101.9±24.6 mg/dl, serum creatinine
4.0±2.4 mg, BUN: 42.8±22.3 and Hb: 9.8±2.7. The etiology
for CRF was diabetes mellitus (DM) nephropathy in 23 (31%),
contrast-induced nephropathy (CIN) in 10 (14%), chronic
glomerulonephritis (CGN) 8 (11%), ADPKD 6 (8%), renal
calculus in 5 (7%) and unknown in 21 (29%) cases. The
indication for coronary angiography was chronic stable angina
in 38 (52%), unstable angina in 16 (21%), and postmyocardial infarction (MI) angina in 6 (8%), and pretransplant evaluation in rest. Twelve patients had prior history
of MI, 2 had coronary artery bypass grafting (CABG), and one
had percutaneous transluminal coronary angioplasty (PTCA).
On coronary angiogram, 9 patients had significant double
vessel disease, rest had single vessel disease. A total of 82 vessels
and 93 lesions were tackled among which left anterior
descendig artery (LAD) angioplasty was done in 38, right
coronary artery (RCA) in 21, left circumflex (LCx) in 15,
diagonal (Dx) in 4, obtuse marginal (OM) in 3, Ramus in 2
and one saphehous vein graft (SVG). Follow-up treadmill test
(TMT) at mean duration of 11±7 months was available in 49
patients, of these 3 had strongly positive, 6 had mildly positive
and remaining had negative TMT for inducible ischemia. Four
patients died during follow-up, 2 due to congestive heart failure
(CHF), one during transplant and one due to non-cardiac
cause. From these observations we can conclude that PTCA in
CRF is having similar risk and prognosis as in non- renal failure
patients.
Combined use of Thrombectomy Devices and
Glycoprotein IIb/IIIa Receptor Antagonist in 124
Primary Angioplasty: Impact on Procedural
and Short-Term Outcome
PC Mondal, A Khan, R Chakraborty, A Ganguli,
S Banerjee, J Singh, D Ghosh, PK Tewary
Apollo-Gleneagles Hospital, Kolkata
Plaque rupture with superimposed thrombosis is the major
pathogenetic mechanism of acute myocardial infarction (MI).
Coronary intervention in thrombus-containing lesions is a
challenging task. Reduction of the thrombus burden with
subsequent reduction of chance of distal embolization is the
key to successful outcome. Thrombus disruption and
embolization to microcirculation cannot be prevented fully by
use of glycoprotein (Gp) IIa/IIIb receptor antagonist although
these agents are highly efficacious to improve TIMI flow in
epicardial coronary arteries and to prevent rethrombosis. We
present our experience of use of thrombectomy devices (Xsizer- Edicor in 18 patients and Rescue-Boston Scientific in 2
patients) along with abciximab in 20 patients (Group 1) and
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only abciximab in 30 patients (Group 2) during primary
angioplasty during myocardial infarction (PAMI) between
November 2003 to April 2005. All the infarct-related vessels
were stented. TIMI 3 flow was achieved in all 20 patients in
Group 1 but slow flow was noted in 2 patients in Group 2 which
improved after giving intracoronary nicorandil and
nitroglycerine. During hospital stay, no major adverse coronary
event was noted in either group but 3 patients of Group 2 had
significant further peaking of CPK-MB and had clinical cardiac
failure. In conclusion, combined adjunctive use of
thrombectomy devices and Gp IIb/IIIa receptor antagonist,
gives the best outcome in percutaneous coronary intervention
in thrombus-containing lesions in acute MI situations.
Transradial Coronary Angioplasty in Indian
Patients – Single Operator Experience
125
G Sengottuvel, Madan Mohan, Sai Satish, Georgey Koshy,
S Thanikachalam
The aim of this study was to evaluate the single operator's
experience and safety of transradial percutaneous coronary
intervention (PCI). Transradial access has several advantages
over transfemoral approach. The radial artery is easily
compressible, hence hemorrhagic complications are reduced
significantly. Moreover, there are no major vessels or nerves
near the artery hence the risk of injury to these structures is
minimized. From December 2003 to April 2005, 92 patients
(100 vessels) underwent PCI by transradial approach. The
average age of the patients was 56.5 years. The crossover to
femoral was 3 patients (3.26%). A total of 118 stents were
used for the 100 vessels of which 90 were drug-eluting stents;
24 patients required glycoprotein IIb/IIIa antagonists. The
percutaneous transluminal coronary angioplasty (PTCAs)
included complex lesions including kissing balloon inflations
for bifurcations, ostial lesions, use of cutting balloons, etc. The
majority of the patients underwent angioplasty for left anterior
descending artery (LAD) territory followed by right coronary
artery (RCA) and circumflex (Cx) artery. One patient had
lusoria (retroesophageal right subclavian arising from the
descending aorta) and the PTCA was completed by
maneuvering through the loops. The guiding catheters used
were extra back up in 68 patients, Left Judkins for 1 patient,
Left Amplatz 1 for 2 patients, Left Amplatz 2 for 5 patients and
Right Judkins for 24 patients. We conclude that transradial
coronary angioplasties are feasible with negligible
complications in the Indian scenario. The use of glycoprotein
IIb/IIIa antagonists were associated with nil local
complications. Complex angioplasties including kissing
balloon and cutting balloon angioplasty are feasible using
transradial approach. The guiding catheters used were similar to
that used in femoral approach. Amplatz left was found to be the
guiding catheter of choice in complex right coronary lesions.
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Efficacy of Downstream Enoxaparin with
High-dose Tirofiban during Percutaneous
Coronary Intervention in Acute Coronary
Syndromes
126
Puneet K Verma, Arun K Chopra, TP Singh, HP Singh,
MS Sidhu, HS Pannu, TS Kler
Escorts Heart and Super Speciality Institute, Amritsar
Enoxaparin and tirofiban have demonstrable advantages
over unfractionated heparin in patients with unstable angina
(UA)/non-ST elevation myocardial infarction (NSTEMI) who
are treated conservatively. We sought to determine the safety
and efficacy of synergizing enoxaparin with high-dose
tirofiban (HDT) during percutaneous coronary intervention
(PCI) in patients of acute coronary syndromes (ACS). A total
of 106 patients (mean age 57.7±11.1 years, 82 males (77%),
37 diabetics (35%), left ventricular ejection fraction (LVEF):
45.6±10%, body mass index (BMI): 26.1±4.1 kg/m2 pretreated with aspirin and clopidogrel, undergoing high risk PCI
were administered intravenous enoxaparin (0.75 mg/kg)
along with HDT (25 µg/kg/3 min then 0.15 µg/kg/min for
minimum 18 hours) in the catheterization laboratory. They
were followed for a median duration of 204 days (range: 60333 days) for MACE [(death, myocardial infarction (MI), and
target vessel revascularization (TVR)]. The indications of PCI
included STEMI (n=45), unstable angina/NSTEMI (n=51),
post-MI angina (n=10). Nineteen patients (18%) had prior MI,
24 (23%) had LVEF <35%, and 54 (51%) had multivessel (MV)
disease. The reference vessel diameter was 2.5±0.25 mm.
Single vessel-PCI was performed in 75 and MV-PCI in 31
patients [vessels: left anterior descending artery (LAD) 56, right
coronary artery (RCA) 52, and left circumflex (LCx) 32]. A
total of 79 bare metal stents and 90 drug-eluting stents were
deployed in 176 lesions (36 Type A/B1, 140 Type B2/C) at a
mean of 14.7±2.8 atm. The mean stent diameter and length
were 2.85±0.4 mm and 22.6±6.8 mm, respectively. The mean
percent diameter stenosis decreased from 86.2±11.5% to
5.4±6.1%. Multiple overlapping stents were used in 17, direct
stenting in 19, and thrombosuction in 11 patients. TIMI
myocardial blush grade 3 (TMB-3) was achieved in 103, and
TMB-2 in 3 patients. Thirteen (12%) patients (12 STEMI; 1
UA) had periprocedural rise of CPK-MB from 55.5 to 188.5
u/L. There was 1 death at day 7 (stent thrombosis), and 2
patients underwent TVR at 2.5 months [coronary artery
bypass grafting (CABG) and (PCI)] At 6 months MACE seen in
3.8%. Two patients had major bleeding (GIT, groin) requiring
blood transfusion; 11 (10%) had minor groin bleed with
pseudoaneurysm formation in two. Three patients had
asymptomatic fall of hemoglobin (Hb) >3 gm/dl. The median
fall in platelet count and Hb was 22,500/mm3 and 1.35 gm/
dl, respectively. This study demonstrates the safety and efficacy
of coadministering enoxaparin with HDT in patients of ACS
undergoing coronary stenting.
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Complete Myocardial Revascularization in
127
the Setting of Primary Percutaneous
Coronary Intervention for Acute ST Elevation
R Passey, VK Talwar, A Mehta, R Jain,
PK Khanna, RRMantri, JPS Sawhney, B Kandpal,
A Mohanty, S Dhawan, R Mohan, S Sachdeva
The goal of primary percutaneous coronary intervention
(PCI) is to restore flow in the infarct- related artery. The optimal
management of severe stenoses in other major coronary artery
distributions is not clear. We retrospectively evaluated patients
undergoing primary PCI for ST elevation myocardial infarction
(STEMI) between January 1999 and January 2004.
Percutaneous transluminal coronary angioplasty (PTCA) and
coronary artery bypass grafting (CABG) were performed for
complete revascularization. The study population consisted of
290 patients who underwent a PCI on the culprit lesion [these
included left anterior descending artery (LAD) lesions in 144
patients, left circumflex (LCx) in 70 and right coronary artery
(RCA) in 76 patients]. All patients were divided into three
groups based on their coronary anatomy and the strategy of
further PCI- patients with primary PCI in whom PCI of other
significant stenosis was performed as a staged procedure
(group A, n=230), patients in whom CABG of other significant
stenosis was performed in the index period (group B, n=42),
and patients in whom no CABG/PCI was performed (group C,
n=18). In group A patients, who had a staged PCI procedure,
the median interval between the two PCIs was 4 days. In group
B, who had CABG procedure, the median interval between the
PCI and CABG was 6 days. The patients in group A had a higher
cumulative survival compared to patients in group B and C:
94.8% versus 87.3% versus 71.2% at 18 months, respectively.
Likewise, when groups A and B were combined into a group
with more complete revascularization, the survival was higher
compared to group C (less complete revascularization): 91.5%
versus 71.2% at 2 years. For patients undergoing primary PCI,
treatment of non-infarct related artery stenosis was associated
with improved survival. Complete myocardial
revascularization should be the strategy.
Long-Term Results of Coronary Angioplasty
in Patients with Severe
Left Ventricular Dysfunction
128
K Thakkar, A Ranjan, N Tanwar, S Gupta, N Vayada,
R Pothiwala, H Malhotra, S Shah, T Patel
Severe coronary artery disease (CAD) in patients with a
markedly depressed left ventricular (LV) function is associated
with a poor prognosis. Even though percutaneous coronary
intervention (PCI has been offered as an alternative to bypass
surgery, the role of PCI in the treatment of patients with severe
B.p65
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LV dysfunction (LVD) has not been well defined. The aim of
the present study was to evaluate the intermediate-term results
in patients with severe LVD [LV ejection fraction (LVEF) ≤ 30%],
who underwent PCI. Retrospective analysis of angiographic,
echocardiographic and clinical records of patients with severe
LVD, who underwent PCI from January 2003 to May 2004,
was undertaken. Eighty-eight patients aged 61±11 years [81
(92%)] men, all with significant CAD and impaired LV function
(LVEF 21.7±7.35%) were identified. LVEF < 10% was present
in 25 (28.4%) cases and 47 (53.4%) patients presented with
acute coronary syndrome (ACS). Patients’ data before and
after PCI were analyzed. All patients underwent the procedure
from transradial route and transfemoral access was used only
when intra-aortic balloon pump (IABP) support was necessary.
Angiographic success was 97.7% (n=86). Sixty- nine (78.4%)
patients had multivessel PCI and 19 (21.6%) patients required
single vessel PCI. Left anterior descending artery (LAD) was
the commonest vessel requiring intervention (87.5%) followed
by right coronary and left circumflex arteries. IABP was used
in 37% of the procedures. Major vascular complications were
absent; in-hospital MACE was observed in 5 (5.7%) cases,
which included 2 (2.3%) in-hospital deaths. Follow-up is
available in 76 (88.4%) patients. Long-term (>18 months)
follow-up is available in 49/86 (57%) patients and > 12
months follow-up is available in 27 patients. Ten patients were
lost to follow-up. Patients were followed up for a mean duration
of 14.5±6.9 months. Four (5.3%) patients died during this
period all due to sudden cardiac reasons. Two (2.6%) patients
underwent coronary artery bypass grafting (CABG) due to
restenosis; the LVEF has increased to 28±9.7%. Fifty-one
(67.1%) showed increase in EF, 18 (23.7%) showed no
significant improvement in EF and in 3 (3.9%) EF has further
decreased. Improvement in LVEF was more marked in patients
who presented with ACS. Change in at least one class of
cardiac functional status was observed in 53 (69.7%) patients.
Rest of patients (n=17; 22.4%) did not experience significant
change in their symptoms. Overall survival was 94.7%. To
conclude, in patients with severe LVD, continued symptomatic
improvement can be achieved with successful PCI. Long-term
results in this high risk group are encouraging and benefits
are more marked in patients presenting with ACS.
Transcatheter Closure of Coronary Cameral
Fistulae by Different Techniques
129
Vijay Trehan, Saibal Mukhopadhyay, Jamal Yusuf,
Mohit D Gupta, P Nandkishore, Ajayraj, R Batra,
Naresh Goyal, Sanjay Tyagi
GB Pant Hospital, New Delhi
Coronary arteriovenous fistula is an uncommon anomaly,
and large fistulous tracts require closure because of the risk of
myocardial ischemia, endocarditis, rupture and rarely,
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aneurysm formation. Transcatheter therapy has now become
the mainstay of treatment for various intracardiac shunts and,
encouraged by these results, attempts were made to close
coronary arteriovenous fistulae. Ten patients with coronary
arteriovenous fistulae who were either symptomatic (NYHA
class III/IV) or had echocardiographic evidence of left- to-right
shunt >2:1, chamber enlargement, or reversal of flow in the
descending aorta underwent percutaneous transcatheter
occlusion. Fistulae originating from multiple coronary arteries
were excluded. The age range was 2-55 years. There were 8
male and 2 female patients. Nine had congenital, and 1 had
an iatrogenic fistula originating from the left anterior
descending (LAD) artery to the right ventricle, which developed
during balloon angioplasty with a cutting balloon. The
congenital fistulae originated from the right coronary artery
(RCA) in 4, LAD artery in 2, left circumflex artery (LCx) in 1,
and left main coronary artery (LMCA) in 2 patients. The
drainage site was the right ventricle (n=6), right atrium (n=2),
and pulmonary artery (n=2). There were two openings in 1
patient having a large fistula from the LMCA to the right
atrium. One patient had associated tetralogy of Fallot. All the
patients underwent successful closure using detachable Cook®
coils in 5, non-conventional coils in 2 (floppy tips of used
intracoronary guidewires), and Amplatzer occluder in 3 cases.
Two Amplatzer duct occluders were used in 1 patient having
more than one opening. Complete occlusion was achieved in
8 (80%), and there were no complications. A residual shunt
was seen in 2 patients, of which one closed spontaneously
within 24 hours, and the other required closure with an
Amplatzer device. A follow-up of 3-42 months showed no
residual shunting and late complications. Transcatheter
occlusion in coronary arteriovenous fistula requires the
availability of different embolization materials because of
variable morphology. Whenever custom-designed devices/coils
cannot be deployed due to extreme tortuosity of the feeding
vessel, use of floppy tips of percutaneous transluminal
coronary angioplasty (PTCA) wires can be considered as an
alternative.
Small Vessel Stenting
CK Mishra, SN Routray, UK Pattnaik, S Rout,
HN Mishra, M Behera
130
We analyzed our data of small coronary vessel (<2.5 mm)
stenting. Out of total 286 coronary stenting procedures
performed between May 2003 to April 2005, 56 patients
underwent small vessel stenting. Of these 44 (80%) were male
and 12 (20%) were female. Diabetes was present in 28 (50%)
patients, hypertension in 30 (55%) patients, 22 (40%) were
smokers and 6 (10%) patients were having positive family
history of premature coronary artery disease. Indication of
angioplasty included chronic stable angina in 11 (20%),
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unstable angina 19 (35%) and myocardial infarction in 26
(45%). Left anterior descending (LAD) was stented in 23 (41%)
cases, diagonal in 3 (6%) cases, Ramus in 1 (2%) case, left
circumflex (LCx) in 16 (28%) cases and right coronary artery
(RCA) in 13 (25%) cases. Glycoprotein (Gp) IIb/IIIa antagonists
were administered in 7 (15%) patients. All received aspirin and
clopidogrel (or ticlopidine) of which 34 (60%) cases received
loading dose of clopidogrel during procedure and it was
continued for at least 6 months. Total 60 stents were deployed
(Cypher 26, Microdriver 20, Bx velocity 14). Elective stenting
was done in 23 (40.5%) cases. Complications included
subacute stent thrombosis 5 (9.2%) cases, dissection following
plain old balloon angioplasty (POBA) in 11 (19.4%) and
instent restenosis occurring in 6 (12%) in drug-eluting stent
(DES) and 23 (40.5%) in bare metal stent at mean follow-up
period of 5.2 ± 1.6 months. All instent restenoses were
successfully treated with balloon angioplasty-34 (60%) cases
and stenting inside stent-23 (40%) cases. We conclude that
small vessel stenting is safe and has good short- and
intermediate-term results with drug-eluting stent.
Safety and Efficacy of High Loading Dose
Clopidogrel in Percutaneous Coronary
Intervention
131
L R Nath, PK Rustagi, JC Mohan
Metro Golden Heart Institute, Jaipur Golden Hospital, New Delhi
Clopidogrel is a potent inhibitor of platelet aggregation in
a dose-dependent manner. In the background of percutaneous
intrvention, loading dose of clopidogrel has been used at 150
mg to 900 mg in different studies. The objective of this study
was to assess the clinical outcome, bleeding or vascular
complications in higher loading dose clopidogrel. In our study,
128 patients (85 male, 43 female) received 600 mg clopidogrel
3 to 7 hours before percutaneous intervention. Patients were
administered heparin and glycoprotein (Gp) IIb/IIIa inhibitor
as considered appropriate. Previous 124 patients who were
given 300 mg clopidogrel were taken as control group.
Parameters taken for comparison were local access site
complication, bleeding, ischemic chest pain and acute or
subacute stent thrombosis. Baseline characteristics, body
weight, age, diabetic level were similar in both the groups with
no statistically significant difference. Incidence of major
bleeding was 4.8% in control group compared to 4.1% in
treatment group. Vascular access site complications were also
similar in both groups i.e. 2.9% in control versus 2.1% in
treatment group. Episodes of angina and ECG changes during
hospital stay and six-month follow-up were significantly
higher in control group compared to high-dose clopidogrel
group (21 % v. 6.2 %). One patient in treatment group and
three patients in control group developed in-stent thrombosis.
High-dose clopidogrel for loading is safe and has similar rate
of complication rate as lower-dose clopidogrel for percutaneous
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coronry intrevention.While early clinical outcomes appear
superior, bigger study is needed for providing further
information regarding clinical outcome.
Transradial Approach in Treating Very Long
Coronary Lesions with Drug-Eluting Stents
132
R Balaji, V Anand Kumar, B Anupam, C Raghu
Yashoda Hospital, Hyderabad
Drug-eluting stents are fast becoming substitute for
coronary artery bypass graft surgery (CABG) in long segment
coronary lesions. The experience of treating such lesions by
transradial approach (TRA) is limited. Between January 2004
to December 2004, we performed 16 percutaneous coronary
interventions (PCIs) through TRA where we deployed long
coronary stents (all sirolimus-eluting Pronova stents) either
measuring 33 mm or 38 mm. Majority of the lesions treated
were left anterior descending (LAD): 12 (75%), followed by
right coronary artery (RCA): 2 (12.5%), left main coronary
artery (LMCA) > LAD: 1 (6.25%), and left circumflex (LCx):
1(6.25%). All patients were males. Twelve of them were
diabetics. Diameters of the stents were between 2.75-3.50 mm.
Mean stent length was 35 mm (6 stents were 33 mm long and
4 were 38 mm long). Direct stenting was done in 12 (75%)
patients. Indications in treated vessels for long stents were:
chronic stable angina in 9 (56%) followed by unstable angina
in 3 (18%), post-myocardial infarction (MI) in 3 (18%), in-stent
restenosis in 1 (6.25%). Patients were clinically followed up
for 3 to 15 months. One (6.25%) patient died with sub-acute
stent thrombosis while another patient (6.25%) with diabetes
had a long segment in-stent restenosis. All other patients are
doing well on clinical follow-up varying from 4 to 14 months.
From this limited experience we conclude that it is feasible to
deploy long stents through TRA with gratifying results and
high success rate.
Safety and Efficacy of Primary Facilitated
Angioplasty following Acute ST Elevation
133
S Lhila, J Naik, S Garg
Kolkata
Percutaneous coronary intervention (PCI) has become the
preferred approach in the management of acute ST elevation
myocardial infarction (STEMI) if done in a center doing
primary PCI. Most of the patients, however, report to the
centers without any facilities for PCI. Fibrinolytic therapy
therefore appears to be a logical choice in patients with STEMI
in these centers. We adopted a protocol in agreement with 10
primary hospitals or nursing homes who thereby used the
following medical regime in patients of STEMI before shifting
B.p65
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them to our institute for primary PCI. Patients received half
the dose of fibrinolytic therapy with either streptokinase or TPA
combined with full doses of glycoprotein (Gp) IIb /IIIa inhibitor.
Enoxaparin, aspirin, clopidogrel along with other routine
medications were also given before being shifted for PCI to our
institute (facilitated primary PCI group). We found that this
group of patients showed significantly higher TIMI flow in their
infarct-related artery ( IRA) during their coronary angiogram
in comparison to patients who directly reported to our
emergency department with STEMI and did not receive the
above mentioned regime before being shifted to catheterization
laboratory for primary PCI (p=0.005). There were also no
increases in major bleeding incidences in patients receiving
this regime (p=NS). Similar improvements were seen in the
left ventricular (LV) functions of both the groups at 30 days.
Thus, primary facilitated PCI following STEMI helps in
achieving results comparable to patients reporting directly to
centers with facilities for primary PCI.
Long-Term Follow-up of Hybrid Stenting for
Multivessel Percutaneous Coronary
Interventions via Transradial Approach
134
S Suryawanshi, N Tanwar, S Shah, F Panchal, K Fonseca,
S Gupta, H Malhotra, A Ranjan, T Patel
Drug-eluting stents (DES) have significantly reduced the
rate of restenosis and clinical events. For multivessel stenting,
“all DES” implantation have cost restraints in the real world.
To reduce the cost of multivessel percutaneous coronary
intervention (PCI), hybrid stenting [a combination of DES and,
bare metal stent (BMS)] was done in 42 patients through
transradial (TR) approach from February 2003 to December
2004 at our centre. DES was used for proximal left anterior
descending (LAD), small vessels, long lesions and vessel
supplying large area of viable territory, while BMS was used
for large vessels, discrete lesions, non-LAD lesions and vessels
supplying small area of viable territory. The mean age of
patients was 59±10.7 years; 78.6% (n=33) were men, 47.6%
(n=20) were diabetic, 45.2% (n=19) were hypertensive, 23.8%
(n=10) had dyslipidemia and 26.2% (n=11) were smokers. The
indications for stenting were unstable angina in 47.6% (n=20),
myocardial infarction (MI) in 37.1% (n=16) and 14.3% (n=6)
had chronic stable angina. A total of 84 vessels were
intervened, including LAD in all, the right coronary artery
(RCA) in 50 (59.5%), and left circumflex (LCx) in 34 (40.5%)
patients. A total of 91 stents (46, 50.5% DES) were implanted,
representing an average of 2.17 stents per patient. The
procedure time was 25.4±17.4 min, fluoroscopic time was
13.3±9.8 min and contrast dye used was 126±53 ml. Average
DES diameter was 2.72±0.44 mm and DES length was
22.22±7.39 mm. Average BMS diameter was 3.14 ± 0.45 mm
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and BMS length was 16.22±7.39 mm. DES > 18 mm were
deployed in 26 (56.5%) vessels while 23 (50%) DES were
deployed in small vessels (≤2.5 mm). Deployment pressure was
13.4 ± 3.43 atm (range 10-24 atm). There was no significant
radial artery spasm despite multiple exchanges of catheters.
In-hospital MACE [subacute thrombosis, urgent coronary
artery bypass grafting (CABG), death] occurred in none.
Follow-up is available in 40 (95.2%) patients. Mean follow-up
duration was 21.7±2.9 months (range: 18–28 months).
MACE at long-term follow-up was 7.5% (n=3). One (2.5%)
patient died from refractory heart failure after 4 months of
PCI. Two (5%) patients had recurrence of angina. One (2.5%)
of them had CABG and another patient (2.5%) had repeat PCI
due to restenosis. To conclude, hybrid stenting for multivessel
PCI is safe and feasible via TR approach with good acute and
long-term results.
Efficacy and Safety of On-Site Coating of
Stents with Rapamycin
135
S Suryawanshi, N Tanwar, S Shah, N Vayada, K Thakkar,
SM Shah, H Malhotra, N Tanwar, T Patel
Drug-eluting stents (DES) have remarkably reduced the rate
of restenosis. Cost restraint remains the major factor limiting
the use of DES in the “real world”. Therefore the concept of
on-site coating of stents in the catheterization laboratory with
sirolimus has been developed. Yukon stents (Translumina
GmbH, Germany) with microporous surface were coated with
1% to 2% rapamycin in the catheterization laboratory with a
user-friendly Translumina Stent coating system. The amount
of drug and the duration of coating are pre-determined by stent
length as per the manufacturer’s manual. The cost of such
stents is almost half of usual DES in current use. The inclusion
criteria were treatment of a maximum of two de novo coronary
lesions with >70% stenosis suitable for elective percutaneous
coronary interventions (PCI), target vessel diameter between
2.5 to 3.5 mm and lesion length ≤ 25 mm. Exclusion criteria
were acute myocardial infarction (MI) (within 48 hours), ≥ 3
target lesions, total occlusion, calcified or bifurcation lesion,
instent restenosis, thrombus-containing lesions and severe left
ventricular (LV) dysfunction. From September 2004 to April
2005, PCI was performed in 10 patients who had single vessel
disease with Yukon DES stent through the transradial
approach. The mean age of patients was 61.9±6.8 years, 7
were men, 3 were diabetic, 5 were hypertensive, and 4 had
dyslipidemia. The indications for stenting were unstable angina
(n=5); post-MI (n=3) and chronic stable angina (n=2). Usual
doses of aspirin, clopidogrel and heparin were given to all
patients as per our protocol for PCI. Abciximab was used in 4
patients during PCI. Lesions were adequately pre-dilated before
stenting; no post-stent dilation was given. In all patients, single
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Yukon DES stent was adequate for the lesion in the target vessel.
A total of 10 vessels were intervened, including the left anterior
descending (LAD) in 7 patients and the right coronary artery
(RCA) in 3 patients. Lesions were type A in 4 patients, type B
in 5 patients and type C in 1 patient. The length of the Yukon
DES stent varied between 16-25 mm and the diameter varied
between 2.5- 3.5 mm. No patient had any in-hospital MACE.
Five patients have completed 6 months follow-up and other 3
patients have completed 3 months follow-up. Two patients had
angina 3 months post-intervention and both were found to
have normal flowing stented segment with development of de
novo lesion in other vessels. PCI with Yukon DES stent appears
to be safe and feasible with good acute and short-term results.
It is cost effective as compared to other DES. However, larger
studies are needed to prove its efficacy and safety.
Interval Stenting in Acute ThrombusContaining Lesions: A New Treatment
Strategy
136
Vijay Trehan, S Ramakrishnan, Bishwa Bhushan Bharti,
Naresh K Goyal, Vimal Mehta, MP Girish, P Nanda Kishore,
Naveen Bhamri, Jamal Yusuf, Sanjay Tyagi
In the current era of percutaneous coronary intervention
(PCI), managing a coronary thrombus still remains a major
problem. Stents, thrombolytics, antiplatelet agents, distal
protection devices and thrombosuction devices have been
advised. The specialized devices are not freely available and
stenting of lesions with a high thrombus load is often
associated with no or slow flow phenomenon. The study
included 25 patients of acute coronary syndrome (ACS) with
thrombus demonstrable on angiography and who had
established TIMI 3 flow following percutaneous transluminal
coronary angioplasty (PTCA) were included. Patients with flow
limiting dissection following PTCA were excluded. The mean
age of the patients was 48 ± 8 years and 20 were males. Eight
patients had acute ST elevation myocardial infarction (MI) and
were undergoing primary angioplasty. Remaining 17 patients
had unstable angina (UA) or NSTEMI. In all the patients,
angiography was followed by balloon angioplasty and
thrombopulsion, if required. All the patients had TIMI 3 flow.
Ten patients received glycoprotein (Gp)/IIb/IIIa receptor
antagonist. The patients were kept on low molecular weight
heparin (1 mg/kg of enoxaparin) for 7 - 14 days and a repeat
angiography was performed. All the patients had TIMI 3 flow
in the index artery. Eleven patients had < 50% lesions and were
not stented. Only 14 patients had a residual lesion > 50% and
required stents. There were no deaths, major bleeding
complications, or recurrent ischemia during the intervening
period. Three patients had no/slow flow phenomenon on
stenting. A strategy of thrombopulsion followed by intense
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anticoagulation and interval stenting may be tried in selected
acute lesions with high thrombus load with TIMI 3 flow. A
randomized controlled trial is needed to compare this strategy
with routine stenting.
Cardiac Troponin-T Estimation Post-Elective
Stent implantation and Prediction of Early
and Late Outcomes
137
R Baiju, KR Vinod , P Mangalanandan, PN Gupta,
Sunitha Viswanathan, CG Bahuleyan
Some studies have found that CPK elevation after a
procedure reflects the severity and extent of atherosclerotic
disease, others have found that it is related to specific
identifiable complications like distal embolization or branch
occlusion.We studied the effect of troponin-T (Trop-T) in
predicting the outcomes after elective percutaneous
interventions. We studied 100 consecutive patients who
underwent elective percutaneous interventions (PCI). We
excluded patients who had a myocardial infarction (MI) within
3 weeks and patients with significant hepatic or renal failure.
Patients were stratified by measurement of serial CPK and
Trop-T post-procedure. Baseline characteristics included 13%
females. Mean age of patients was 59.1± 11 years; 28% were
smokers, 36% hypertensives, 28% diabetics, 52% had unstable
angina, 31% post-MI, 17% with chronic stable angina. No
patient had significant CPK elevation. Of 15 patients who had
Trop-T elevation, 5 had clinical restenosis, 2 required coronary
artery bypass grafting (CABG) and 3 underwent repeat
percutaneous transluminal coronary angioplaty (PTCA).We
had only one in-hospital mortality due to acute hepatic failure.
86% of patients had 1 year follow-up. Outcomes in the Trop-T
positive group were statistically significant with p values
<0.05. CPK had no correlation with outcomes. Cardiac TropT predicts poorer clinical outcomes. Trop-T is a better predictor
than CPK. Large scale studies are required to correlate graded
Trop-T elevations with outcomes.
Percutaneous Transluminal Coronary
Angioplasty and Stenting with Drug-Eluting 138
Stent and Follow-up: Single Centre Experience
of Pronova Sirolimus-Eluting Stent
DK Baruah, M Srinivas NK Panigrahi
Apollo Hospital, Visakhapatnam
Restenosis is the major concern of percutaneous
transluminal coronary angioplasty (PTCA) and drug-eluting
stent (DES) has been able to reduce it to a significant extent.
We reviewed 77 consecutive cases of PTCA with stenting using
Pronova DES and immediate as well as 6 months follow-up
results were analyzed. There were 63 (81.8%) males and 14
(18.2%) females with mean age of 55±9 years. Risk factors
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analysis revealed hypertension in 37 (48%), diabetes 23
(29.8%), tobacco use 8 (10.5%), hyperlipidemia 15 (19.4%),
obesity 6 (7.8%) and family history of coronary artery disease
(CAD) in 3 (3.4%). Forty-four (57.1%) cases presented with
anterior wall myocardial infarition (AWMI), 18 (23.4%)
inferior wall myocardial infarction (IWMI), 21 (27.3%)
unstable angina and 10 (12.9%) cases with chronic stable
angina; 62 (80%) cases had normal left ventricular (LV)
function. Distribution of various arteries attempted were – left
anterior descending (LAD): 43 cases (55.8%), right coronary
artery (RCA): 18 (23.3%), left circumflex (LCx): 15 (19.4%)
and others 1 (1.3%). Type A lesions were in 1 (1.2%) patient,
type B1 12 (14.3%), type B2 25 (29.8%) and type C in 36
(42.8%). Analysis of reference diameter of vessels revealed
≤ 2.5 mm in 19 (22.6%) patients, 2.6-3 mm in 50 (59.5%)
and 3.1-3.5 in 15 (17.8%) patients. 84 stents were used in 77
cases with the rate of 1.09 stent per patient. The lesion lengths
were analyzed and found to have ≤ 15 mm in 18 (21.4%) cases,
16-20 mm in 19 (27%) and > 20 mm in 39 (46.4%) cases.
Technical success rate was 100%. There was no death. Two
patients had immediate complication. Follow-up was carried
by clinical review in hospital, telephonic information about
clinical status, stress test and angiogram. Out of 77 cases, 58
(75.3%) cases could be followed up. Five (8.6%) cases were
found to have restenosis and one patient died of MI. Other 4
cases underwent coronary angiogram and were sent for
coronary artery bypass grafting (CABG) giving the target vessel
revascualrization (TVR) rate of 6.9%. Out of those 5 cases, 2
cases underwent PTCA for restenosis in bare metal stent.
Follow-up data of DES in India are not many. Although number
of cases in our study was not enough to come to definite
conclusion, it showed the trend of immediate and mid-term
results of Pronova DES.
Sirolimus-Eluting Stents for the Treatment of
139
Long Lesions in Small Coronary Arteries
Vivek Tandon, Gaurav Minocha, Mitu A Minocha,
Rajneesh Kapoor, K Subramanyam, Praveer Agarwal,
Sanjay Chugh, Balbir Singh, Atul Kasliwal, Atul Mathur,
Ashok Seth, Suman Bhandari, TS Kler
Sirolimus-eluting stents (SES) have been shown to reduce
restenosis significantly. Predictors of instent restenosis (ISR)
include smaller reference vessel diameter and longer lesion
length. We sought to study the efficacy and safety of SES in
patients with long lesions (≥28 mm) in small coronary arteries
(≤2.5 mm); 170 patients (73% male, mean age 58.2±20.6
years) with significant diffuse stenotic lesion (≥28 mm) in a
small native coronary artery (<2.5 mm) were treated with SES
between September 2002 and March 2005 at our institution.
Diabetes was identified as a major risk factor in 46% patients.
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SES implantation was successful in all. Mean vessel size was
2.42±0.11 mm and mean lesion length was 36.4±8.2 mm.
Glycoprotein (Gp) IIb/IIIa inhibitors were used in 60% patients.
One patient had acute stent thrombosis immediately following
the procedure which was successfully corrected; 5.8% patients
had significant cardiac enzyme rise (> 3 times) following the
procedure. Clinical follow-up is available in 92% patients. Total
clinical MACE with mean follow-up duration of 16.2±8.4
months, including death, myocardial infarction (MI) / target
vessel revascularization (TVR) has been observed in 4.1%
patients. One patient died of heart failure 8 months postprocedure, 3 patients underwent TVR, 1 following subacute
stent thrombosis and 2 had instent restenosis; 2 patients had
MI, 3 patients had clinical angina and were advised coronary
angiography. Sirolimus-eluting stents are a safe and effective
option for the treatment of long lesions in small native
coronary arteries with low rate of clinical MACE on mid-term
follow-up.
Long Overlapping Drug-Eluting Stents to
≥ 50 mm Length) Coronary
Treat Diffuse (≥
Artery Lesions
140
Gaurav Minocha, Vivek Tandon, Mitu Minocha,
Aseem Dhall, Praveer Agarwal, Sanjay Chugh,
Rajneesh Kapoor, Rajesh Jindal, Narendra Khanna,
Madhukar Shahi, Balbir Singh, Atul Mathur,
Diffuse coronary artery disease (CAD) is a challenge for the
interventional cardiologist with high rate of instent restenosis
with use of bare metal stents. We sought to study the safety
and efficacy of multiple overlapping drug-eluting stents (DES)
in diffuse coronary artery lesions (≥ 50 mm). Consecutive
patients (n=64) with de novo diffuse coronary lesions treated
with > 50 mm long DES from September 2002 to December
2004 were analyzed. The study population consisted of 64
patients (56.8% diabetic); 49 patients were treated with
sirolimus-eluting stents (SES) and 15 with paclitaxel-eluting
stents (PES). The number of stents implanted per patient was
2.11±0.24, stent length varied from 51 to 91 mm, with mean
total stent length of 62.1±11.9 mm. The mean reference vessel
diameter was 2.89±0.4 mm. Angiographic and procedural
success was achieved in 100% patients. 10.9% had in-hospital
non-ST elevation myocardial infarction (MI) while none had
in-hospital stent thromboses. Glycoprotein (Gp) IIb/IIIa
inhibitors were used in 63.6% patients. Clinical follow-up has
been completed in 92% patients with mean follow-up duration
of 14.6±8.4 months. Total clinical major adverse cardiac event
(MACE) rate was 9.3%. There were 2 deaths (1 non-cardiac).
Two patients underwent target vessel revascularization, 1
following subacute stent thrombosis; 1 patient suffered MI 3
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434
months after percutaneous coronary intervention (PCI).
Implantation of long overlapping stents in a predominantly
diabetic population is safe procedure with good intermediate
term clinical follow-up.
Effectiveness of Drug-Eluting Stents
in Treatment of Saphenous Vein Grafts
141
Aseem Dhall, Vivek Tandon, Gaurav Minocha,
Atul Mathur, Praveer Agarwal, Atul Kasliwal,
NN Khanna, Suman Bhandari, Balbir Singh,
RR Kasliwal, TS Kler
The use of drug-eluting stents (DES) in saphenous vein
grafts (SVG) has not been fully evaluated. We studied 44
patients (39 males; mean age 66.4 years) who underwent de
novo SVG intervention with DES in our institute over last 27
months. Mean graft age was 8 years. Clinical presentation was
an acute coronary syndrome in 36 (81.8%) patients. SVG to
right coronary artery (RCA) was stented in 18 patients, SVG
to obtuse marginal (OM) in 23, diagonal in 1 and ramus in 2
patients. Cypher stent was used in 33 (75%) patients, Taxus
in 7 (15.9%), and Pronova in 4 (9.1%) patients. The mean
diameter and length of stents was 3.32 mm and 24.6 mm,
respectively. Distal protection device (DPD) was used in 11
patients (25%). Glycoprotein (Gp) IIb/IIIa inhibitors were used
in 18 (40.9%) patients. One patient had periprocedural
myocardial infarction (MI) and 2 patients had asymptomatic
rise of cardiac enzymes. Six months angiographic follow-up
could be done in 9 patients in which all stents were found to
be patent. Over a mean follow-up of 18+2.3 months of 32
patients, 1 patient died from a non-cardiac cause and there
were no further MIs in any patient. Increased use of DPDs
might reduce periprocedural MI.
Tirofiban in Percutaneous Coronary
Intervention in a Spectrum of Coronary
Artery Disease Patients
142
A Ahuja, A Singhal, A Puri, K Behal, R Sethi, SK Dwivedi,
VS Narain, RK Saran, VK Puri
Glycoprotein (Gp) IIb/IIIa inhibitors are well established for
their role in reducing complications in patients undergoing
percutaneous coronary interventions (PCI). However their cost
remains a concern in our setup. Therefore, we aimed to study
the role of tirofiban as compared to eptifibatide in patients
undergoing PCI with various manifestations of coronary
artery disease (CAD). A total of 60 patients with CAD who
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underwent PCI from September 2004 to June 2005, were
enrolled for this study. Forty-six patients received tirofiban
(Group A) and 14 received eptifibatide (Group B). All patients
received the standard loading dose of clopidogrel (300 mg) and
aspirin. In Group A, indication for PCI was unstable angina
(USA) or non-ST elevation myocardial infarction (NSTEMI) in
30.4%, ST elevation myocardial infarction (STEMI) in 65.2%,
and chronic stable angina in 4.4%. In Group B, indication for
PCI was USA or NSTEMI in 26.6%, STEMI in 64.3%, and
chronic stable angina in 7.1%. Drug-eluting stents (DES) were
used in 34.8% patients in group A and 42.9% patients in Group
B. Bare metal stents (BMS) were used in 78.3% patients in
Group A and 71.5% patients in Group B. Post-procedure MI
defined as CK-MB rise > 3 times upper limit of normal occurred
in 8.3% of the total cohort, 6.5% in Group A and 14.2% in
Group B (p=NS), while in-hospital mortality occurred in 3
patients (2 patients in Group A and 1 in Group B) (p=NS).
Minor bleeding was observed in 10% of the patients (3 in each
group). No episodes of major bleeding or thrombocytopenia
were observed. 30-day major adverse cardiovascular events
(defined as recurrent infarction, re-admission for ischemia or
worsening heart failure and death) were similar in both groups
(p=NS). No difference was seen in the two groups in either the
DES or the BMS subgroups (p=NS). Use of tirofiban leads to
clinical and procedural outcomes comparable to eptifibatide
with no increase in complications following a PCI across the
spectrum of CAD patients ranging from chronic stable angina
(CSA) to USA/NSTEMI and STEMI
Chronic Total Occlusions – Our Experience
CVN Murthy, KG Sundar, AG Narayanaswamy,
R Sriram, G Sudarsana
143
Southern Railway HQ Hospital, Chennai
Percutaneous coronary intervention (PCI) in chronic total
occlusions (CTO) has been associated with variable success
rates. In the last 4 years, a total of 840 patients underwent
PCI of which 145 (17.3%) were for CTO. Majority of the
patients were males in the age group of 45–55 years. The
distribution of the CTO was in the left anterior descending
(LAD) artery in 57 (39.4%) patients, left circumflex (LCx)
artery in 41 (28.2%) patients and the right coronary artery
(RCA) in 47 (32.4%) patients. CTO were crossed with Floppy
hi -torque guidewire only in 63% of patients. Hydrophillic
guidewires were used in 24% of patients. Percutaneous
transluminal coronary angioplasty (PTCA) was successful in
82/145 (57.6%) occlusions. Inability to cross the lesion with
guidewire was the major reason for failure (74%). There were
no procedure-related complications. In conclusion, moderate
success rates were achieved with PCI in CTO in our series with
the floppy hi-torque guidewire only being used in the majority
of lesions, with no significant procedure-related complications.
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Asystolic Cardiac Arrest - Basic Life Support
and Beyond
144
Vijay Trehan, S Ramakrishnan, Bishwa Bhushan Bharti,
Naresh K Goyal, Bhola Shankar Vivek, Vimal Mehta,
Balram Mishra, Mohit Dayal Gupta, Sanjeev Kathuria,
Jamal Yusuf, Sanjay Tyagi
Cardiac arrest associated with asystole has very poor
outcome. Management of asystole consists of basic life support
(BLS) and advanced cardiac life support (ACLS). We present
our early experience of coronary angiography (CAG) and
angioplasty in patients of known heart disease presenting with
cardiac arrest. In the last one year, 7 patients were taken up
for CAG while being resuscitated for asystolic cardiac arrest.
All the patients had previous history suggestive of coronary
artery disease (CAD). All patients had cardiac arrest either in
the emergency ward or on being transported to the hospital
or referred from the Department of Medicine with severe
bradyarrhythmias. None of the patients had an
electrocardiographic (ECG) evidence of ST elevation
myocardial infarction (MI). The patients were resuscitated and
intubated. Recommended ACLS care was given. TPI was
inserted in all the patients. All of them underwent CAG while
cardiopulmonary resuscitation (CPR) was being done. CAG
showed significant obstructive CAD in all the patients. Balloon
angioplasty of the culprit vessel was done in 6 patients. Two
patients survived and were discharged from the hospital. Two
patients died within 12 hours and 3 died within 72 hours. Of
the surviving patients, one had chronically occluded left
anterior descending (LAD) and left circumflex (LCx) with
thrombus-containing lesion in right coronary artery (RCA),
which was opened. The other patient had LAD occlusion with
significant disease in LCx and RCA. When facilities are
available, an attempt at percutaneous coronary intervention
(PCI) may be worthwhile in patients with cardiac arrest with
history of heart disease.
Off-Hour Intervention in Acute Myocardial
Infarctions: Is There a Difference?
145
R Pothiwala, A Ranjan, N Tanwar, H Malhotra, F Panchal,
R Radadiya, S Gupta, S Shah, T Patel
Importance of early intervention in acute myocardial
infarction (AMI) is well known. Reduction in door-to-balloon
time is responsible for better outcome in AMI interventions.
We retrospectively analyzed our data to find out difference
between off-hour (Group I) and routine hour (Group II)
interventions in AMI. The clinical, angiographic and inhospital outcomes were analyzed. Between April 2004 to April
2005, 120 patients underwent percutaneous coronary
intervention (PCI) in AMI. The mean age of patients was
59±14 years and 92 (76.6 %) were men. Of these, in 40
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(33.3%) patients the procedure was performed during off-hour
(18.00 –07.00) and in rest of the patients (n=80; 66.6%) the
procedure was performed during routine hours (07.00 –
18.00). The clinical, angiographic and in-hospital course
[(major adverse cardiac events (MACE)] are summarized in the
table.
Characteristics
Off-hour PCI (n=40)
Routine hour PCI (n=80)
Age
Male sex
Hypertension
Family history
Smoking
Door-to-balloon time (min)
AWMI
Killip class > 3
Culprit vessel LAD
RCA
LCx
Multivessel disease
Multivessel PCI
LVEF (%)
IABP
Abciximab
Prior thrombolysis
In-hospital MACE
Death
55±8.12
30 (75%)
25 (62.5%)
18 (45%)
28 (70%)
105±12.1
28 (70%)
10 (25%)
28 (70%)
10 (25%)
02 (5%)
15 (37.5%)
2 (5%)
25±10
12 (30%)
23 (57.5%)
16 (40%)
4 (10%)
1 (2.5%)
60±9.02
62 (77.5%)
58 (72.5%)
41 (51.25%)
60 (75%)
52.7±16.3
47 (58.7%)
15 (18.8%)
47 (58.7%)
18 (22.5%)
15 (18.8%)
40 (50%)
23 (28.8%)
30±11.2
19 (23.75%)
42 (52.5%)
60 (75%)
3 (3.8%)
1 (1.2%)
AWMI: anterior wall myocardial infarction; LAD: left anterior descending; RCA: right
coronary artery; LCx: left circumflex; PCI: percutaneous coronary intervention;
LVEF: left ventricular ejection fraction; IABP: intra-aortic balloon pump
To conclude, off-hour interventions in AMI are associated with
increased chances of adverse outcome. The factors, which
appear to be responsible, are prolonged door-to-balloon time,
incomplete revascularization and worse clinical status at the
time of admission.
Intra-Aortic Balloon Pump Supported
Coronary Angioplasty in Severe Cardiogenic
Shock: Acute and Mid-Term Results
146
H Malhotra, A Ranjan, N Tanwar, K Thakkar, K Jani,
R Radadiya, S Gupta, S Shah, T Patel
Sterling Hospital, Ahmedabad, Gujarat
Cardiogenic shock in acute coronary syndrome (ACS)
carries a high mortality. Coronary interventions in such cases
are necessary, but have high risk. We present our data of intraaortic balloon pump (IABP)-supported urgent coronary
angioplasty/stenting for patients in cardiogenic shock, acute
coronary syndrome (ACS) and left ventricular (LV) dysfunction
(LVD). Thirty-nine patients with ACS and cardiogenic shock,
treated with vasopressors and IABP were taken up for urgent
coronary interventions after taking high risk consent. The
present study aimed to evaluate the immediate-and mid-term
results in such patients. Retrospective analysis of angiographic,
echocardiographic and clinical records of these patients, who
underwent percutaneous coronary intervention (PCI) from
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June 2003 to May 2005, was undertaken. IABP was inserted
prior to coronary intervention in each patient. Majority (n=33,
84.6%) were men and the mean age was 62 ± 11 years (range:
41-78 years). Thirty-five (89.7%) patients presented with
acute myocardial infarction (MI) and rest with previous MI
with unstable angina (UA). Out of 35 patients with acute MI,
26 (74.3%) presented with anterior wall myocardial infarction
(AWMI). Three (7.7%) patients had additional complete heart
block (CHB). The mean left ventricular ejection fraction (LVEF)
was 16.6±9.2 % (range: 5-35 %). Radial route was used for
intervention for 30 (76.9%) patients and femoral route was
used only when bilateral radial pulses were not palpable. Single
vessel disease was present in 10 (25.6 %) patients, double vessel
disease in 10 (25.6 %) and triple vessel disease in 19 (48.8%)
patients, left main coronary artery (LMCA) was critically
diseased in 3 (7.7%) patients. Culprit vessel angioplasty was
attempted in all patients and additional vessel intervention
(non-infarct related artery) was performed if the artery was
larger > 2.5 mm and was supplying viable myocardium. Total
of 53 lesions in 47 vessels were intervened. Multivessel
intervention was performed in 8 (20.5 %) and single vessel was
performed in 31 (79.5%) cases. Plain old balloon angioplasty
was done in 6 (12.8%) vessels and 41 (87.2%) vessels were
stented. LMCA was stented in 3 (6.4 %), left anterior
descending (LAD) in 27 (57.4%), left circumflex artery (LCx)
in 4 (8.5%), right coronary artery (RCA) in 12 (25.5%) and
Ramus in 1 (2.2%). Angiographic success was achieved in 34
(87.2%) patients. Abciximab was used in 18 (46.1%) patients,
8 (20.5%) required temporary pacing and 10 (25.6%) required
ventilatory support. The mean duration of IABP support was
29±6.5 hours. Four (10.3%) patients died in hospital, 1 due
to multi organ failure and 1 due to septicemia. Other 2 patients
had unsuccessful PCI and died on the day of intervention. Two
(5.1%) patients were referred for coronary artery bypass
grafting for complete revascularization and were discharged
on post-operative day 10. Follow-up is available in 29 (82.9%)
patients. The mean follow-up duration was 7.6±3.3 months.
Of these 17 (58.7%) were asymptomatic, 9 (31%) had dyspnea
on exertion (NYHA class 2-3) due to LVD and 3 (10.3%) had
died, all cardiac reasons. To conclude, IABP- supported
coronary angioplasty in cardiogenic shock can be performed
safely and has good acute and mid-term results.
Efficacy of High-Dose Tirofiban during
Elective or Urgent Precutaneous Coronary
Intervention with Clinical or Angiographic
High Risk Features
147
Puneet K Verma, Arun K Chopra, TP Singh, HP Singh,
MS Sidhu, HS Pannu, TS Kler
Escorts Heart and Super Speciality Institute, Amritsar
The use of tirofiban during percutaneous coronary
intervention (PCI) is controversial and preliminary data with
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use of high-dose tirofiban (HDT) appears safe but is scanty. A
total of 133 patients [mean age 57.6±10.6 years,
107 (80%) males, 47 (35%) diabetics, left ventricular ejection
fraction (LVEF) 46.7±10.1%, body mass index (BMI) 26.2±4.2
kg/m2] pre-treated with aspirin and clopidogrel, undergoing
high risk PCI were administered tirofiban (25 µg/kg/3 min,
then 0.15 µg/kg/min) for atleast 18 hours (mean 22.15±3.7
hours, median 22 hours) immediately before the procedure.
They were followed for median duration of 237 days (range:
60-555 days) for MACE [death, myocardial infarction (MI) and
target vessel revascularization (TVR)]. The indications of PCI
included acute coronary syndromes /ST elevation in
myocardial infarction (STEMI) (n=44)], unstable angina/nonstable STEMI (n=6), post-MI angina (n=16) stable angina
(n=5), and silent myocardial ischemia (n=1). Twenty-four
(18%) patients had prior MI, 27 (20%) had LVEF <35%, and
72 (54%) had multivessel (MV) disease. The reference vessel
diameter was 2.55±0.3 mm. Single vessle-PCI was performed
in 92 and MV-PCI in 41 patients [left anterior descending (LAD)
72, right coronary artery (RCA) 52 and LCx-48). A total of
96 bare metal stents and 117 drug-eluting stents were
deployed in 229 lesions (49 Type A/B1, 180 Type B2/C) at a
mean of 14.6±2 atm. The mean stent diameter and length
were 2.95±0.3 mm and 22.3±6.6 mm, respectively. The mean
percent diameter stenosis decreased from 86.2±11.5% to
5.9±6.3%. Multiple overlapping stents were used in 24, direct
stenting in 21 thromboaspiration in 12, and cutting balloon
in 5 patients. TIMI myocardial blush grade 3 (TMB-3) was
achieved in 130, and TMB-2 in 3 patients. Fifteen (11%)
patients (STEMI:14; UA:1) had periprocedural rise of CPK-MB
from 51.5 to 190.3 Iu/L. There were 2 deaths at day 7 [sudden
cardiac death (SCD) at home] and 8 months (subarachnoid
hemorrhage), and 2 patients underwent TVR at 2.5 months
coronary artery bypass grafting (CABG)] and 6 months (PCI )
[MACE 3.75%; (n=5)]. Two patients had major bleeding (GIT,
groin) requiring blood transfusion, 14 had minor groin bleed
with pseudoaneurysm formation in two. Four patients had
asymptomatic fall of hemoglobin (Hb) >3gm/dl. The median
fall in platelet count and Hb was 23,500/mm3 and 1.15 gm/
dl, respectively. This study seems to confirm that the use of HDT
in patients undergoing high risk coronary stenting is safe and
efficacious in reducing the incidence of post-PCI ischemic
complications.
interventions has been shown by the use of drug-eluting stents
(DES). But the data regarding DES of >30 mm length is limited.
We report our experience with very long (33 mm) Cypher stent.
Between January 2003 and June 2005, a total of 1850
coronary stenting procedures were performed, 66 patients
belonged to this category. Mean age was 56±10.4 years (range:
42–64 years), 56 (85%) were males and 10 (15%) were
females. Diabetes was present in 14 (21%) patients,
hypertension in 17 (25%) patients, dyslipidemia in 6 (9%)
patients, 17 (25%) patients were smoker and 3 (5%) had
positive family history of premature coronary artery disease
(CAD). The indications of angioplasty were chronic stable
angina in 44 (66%), unstable angina in 19 (28%) and
myocardial infarction (MI) in 3 (6%) patients. Left anterior
descending (LAD) was stented in 50 (76%) cases, left
circumflex (LCx) in 8 (12% ) and right coronary artery (RCA)
in 8 (12%) cases. All lesions were pre-dilated and stents were
deployed at 12-14 atm pressure with an attempt to cover the
lesion from normal segment to normal segment. The different
diameters of the stents used were 2.75 mm, 3 mm, and 3.5
mm in 8 (12%), 28 (43%) and 30 (45%) patients, respectively.
The mean diameter of the stents used was 3.15±0.34 mm.
Fifteen (23%) patients received additional stent in another
vessel in the same sitting. Total 15 (23%) patients received
glycoprotein (Gp) IIb/IIIa inhibitors. All received aspirin as well
as clopidogrel following the procedure. Procedure was
successful with excellent results in all except one patient who
developed acute instent thrombosis. At a mean follow-up
period of 12.4±3.5 months (range: 3-22 months), there has
been no instance of death/MI. One patient who was
symptomatic underwent repeat coronary angiography which
showed diffuse instent restenosis, which was successfully
treated with plain balloon angioplasty. We conclude that very
long lesions or diffuse disease can be successfully treated by
very long Cypher stent with excellent acute results and good
outcome on intermediate term follow-up.
Drug-Eluting Stents in Small Vessels
Kamal Chawla, Naveen Garg, Sudeep Kumar,
Satyendra Tewari, Aditya Kapoor, PK Goel, Nakul Sinha
149
Results of Stenting Using Very Long Cypher
Stents
148
Umesh Agrawal, Amresh Kumar, Naveen Garg,
Sudeep Kumar, Satyendra Tewari, Aditya Kapoor,
PK Goel, Nakul Sinha
Results of coronary angioplasty for long segment coronary
stenosis or diffuse disease are disappointing. Recently,
significant reduction in instent restenosis and a need for repeat
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Drug-eluting stents (DES) have been shown to reduce
restenosis significantly. Bare metal stents in small vessels have
a high restenosis rate. So, DES could be an attractive choice for
such patients. We assessed the safety and efficacy of DES for
the treatment of small native coronary arteries (< 2.5 mm in
size). From January 2002 to June 2005, a total of 134 patients
were treated using 2.5 mm size DES. Mean age was 60±10.2
years (range: 48–74 years). Out of all 134 patients, 110
(82.1%) were males, and 24 (17.91%) were females. Total 48
(35.82%) patients were diabetic. Other major coronary risk
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factors were hypertension in 84 (62.7%), smoking in 48
(35.8%), dyslipidemia in 42 (31.3%) and positive family
history of premature coronary artery disease (CAD) in 16
(12.7%) patients. Most common mode of presentation was
chronic stable angina in 55 (41.1%) patients. Left anterior
descending artery (LAD) was stented in 41(30.6%), left
circumflex (LCx) in 62 (46.3%), right coronary artery (RCA)
in 27 (20.1%) and Ramus in 4 (3.0%) cases. Mean stent length
was 18.0±10.0 mm (8.0-28.0 mm). Different DES used were
Cypher in 13 (9.7%), Pronova in 31 (23.13%), Taxus in 43
(32.1%), Yukon in 30 (22.4%), others in 17 (12.7%) patients.
Stents of < 20 mm length were used in 84 (62.7%) patients,
20-30 mm length in 44 (32.8%) while >30 mm length size
stents were used in 6 (4.5%) patients. Glycoptorein (Gp) IIb /
IIIa inhibitors were used in 42 (31.3 %) patients. Elective stent
placement was done in 70 (52.2%) patients, while stenting
was performed for suboptimal results in 62 (46.3%) cases, and
for dissection in rest of 2 (1.5%) patients. The procedure was
successful in all without in-hospital major adverse cardiac
events (MACE) in any patient. No patient developed in-stent
thrombosis. Clinical follow-up is available in 104 patients and
showed no death or myocardial infarction. Only 3 (2.9%)
patients presented with recurrence of symptoms. Repeat
coronary angiogram revealed in-stent restenosis in all 3
patients, which was successfully treated by repeat plain balloon
angioplasty. To conclude, small vessel stenting using DES is safe
with low rate of MACE at intermediate-term follow-up.
Percutaneous Transluminal Coronary
Angioplasty in Chronic Total Occlusion by
Transradial Approach
150
Comparison of Conventional 'Kissing
Ballooning' with Dedicated Bifurcation
Balloons for True Coronary Bifurcation
Lesions
151
AN Patnaik, OS Saisatish, BK Dubey, B Srinivas,
D Seshagirirao
Nzam's Institute of Medical Sciences, Hyderabad
Precutaneous interventional treatment of coronary
bifurcation lesions remains a challenging task. The kissing
balloon technique resulted in improved outcome and is an
accepted technique as a final step at many centers. We used
Avion bifurcation RX2 balloons in the last 2 years in place of
two separate balloons for such cases, both for pre-dilation and
final kissing. This balloon has two distal balloons (MVB-main
vessel balloon and SBB-side branch balloon). Cases matched
for age, sex and lesion were non-randomly allotted to either
conventional kissing balloon group (Group I, n=36) or
dedicated bifurcation balloon group (Group II, n=24). The
baseline characteristics including vessels involved were similar
in both groups. The procedural success was comparable
(91.6% and 87.5%). The bifurcation balloon could not be
navigated in two lesions due to odd angle of the side branch.
In one case the length of lesion was 23 mm in the main vessel
and dedicated balloon could not cover the whole lesion. There
were no deaths or emergency coronary artery bypass grafting
(CABG) in either group. Major adverse cardiac events (MACE)
rates were not significantly different. The main advantages
with dedicated bifurcation balloon were ease of deployment
and single-operator dependency, saving cost of one balloon,
higher stability and 6 F compatibility. It is concluded that Avion
RX2 balloon can be used as an alternative to conventional
'kissing' balloons in selected cases.
Transradial approach is replacing traditional transfemoral
approach in many centers. Successful percutaneous coronary
intervention (PCI) in chronic total occlusion (CTO) has been a
challenge to interventional cardiologist. But with improvement
in guide wires and other hardware, the scenario is changing
steadily. Transradial PCI in CTO was attempted in 40 patients
in our institute during June 2002-June2004. Procedural
success was achieved in 34 (85%) patients. Six (15%) lesions
could not be crossed. The vessel distribution was left anterior
descending (LAD) in 18 (52%), LCx in 6 (17%), right coronary
artery (RCA) in 10 (29%). EBU guide catheter was used in LAD
interventions, whereas for LCx and RCA, AL2 and JR catheters
were used, respectively. The choice of the wire was Cross-it XT
200 in 27 (79%), XT 300 in 6 (17.6%) and Cross wire in 1
(2.9%) case. Procedural success was highest in LAD (18 out
of 20), followed by RCA (10 out of 12) and LCx (6 out of 8).
Transradial approach is effective for re-canalizing CTOs with
equal success rate compared to femoral approach.
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Initial Experience with Dedicated Coronary
Bifurcation Stents
152
AN Patnaik, OS Saisatish, BK Dubey, B Srinivas, D Seshagirirao
Nizam's Institute of Medical Sciences, Hyderabad
Dedicated bifurcation stents for coronary stenting of the
bifurcation lesions are yet to find wide acceptance. Only a few
case reports or small series are reported so far. Recently, Invatec
carina (non-drug coated) stents were used in our institute.
Eight cases with bifurcation lesions had undergone bifurcation
angioplasty. Six were males and the average age was 62±1.25
years. Five were diabetics and 3 had recent myocardial
infarction (MI). The vessels involved were left anterior
descending artery (LAD)-D1 (n=4), left circumflex (LCx) obtuse marginal (OM) 1 (n=3) and posterior descending artery
(PDA)-posterior left ventricular branch (PLVB) bifurcation
(n=1). Adequate pre-dilation with conventional/dedicated
bifurcation balloons was done in all cases. Procedural success
was obtained in all cases. The optimal seating required the use
of a buddy-wire in three cases. Additional stents were used in
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the side branch in two patients. There were no deaths/
emergency coronary artery bypass grafting (CABG). Only four
had follow-up angiogram and one case showed mild in-stent
restenosis. It appeared that dedicated bifurcation stents deserve
to be tried in more cases in view of simple design, ease of
deployment and promising acute results by providing good
adoption to the anatomy of carina and preservation of side
branch access.
Facilitated Percutaneous Intervention:
Thrombolysis followed by Immediate
Percutaneous Intervention Thrombolytic
Therapy alone in Acute ST Elevation
154
Sajan Narayanan, R Manu, Mathew Iype,
VV Radhakrishnan, K Sivaprasad, K Sunitha,
K Suresh, CG Bahuleyan
Medical College Hospital, Thrivananthapuram
Bifurcation Angioplasty Using
Transradial Approach
153
G Sengottuvel, R Ajay Kumar, B Madan Mohan,
S Thanikachalam
Transradial approach is increasingly being used for
coronary diagnosis and intervention. This study is an analysis
of prospectively collected data on bifurcation angioplasty using
right transradial approach. A strategy of provisional T stenting
was used. Kissing balloon was done only in cases where there
was significant pinching of the side branch ostium. A total of
18 patients underwent angioplasty of bifurcation lesions from
December 2003 to April 2005 in our institution. There were
15 males and 3 females. In all the patients, right transradial
approach was used with 6 F sheaths and 6 F Medtronic
launcher guiding catheters. Bifurcation lesions involved were
left anterior descending artery (LAD)/D1 in 7 patients,
diagonal bifurcation in 1, circumflex(Cx)/marginal in 4, right
coronary artery (RCA)/marginal in 2 and posterior descending
artery (PDA)/posterior left ventricular branch (PLVB) in 4. Left
extra back up guiding catheter was used in 12 patients; Judkins
right was used in 5 and left Amplatz in one. Direct stenting
was done in 4 patients and pre-dilation followed by stenting in
14. Cutting balloon was used in 2 patients. Bifurcation balloon
was attempted but failed in one patient. Two cases had
associated total occlusion, one being hidden bifurcation. In all
18 patients we used 2 wires and they were placed in the main
vessel and side branch, respectively. In one patient, wiring was
done with difficulty as the diagonal artery had a perpendicular
take off. The main vessel was stented in 17 out of the 18
patients. In one patient, due to dissection in the side branch,
both main vessel and the side branch needed stenting. Kissing
balloon inflation was performed in 9 patients using compatible
balloons such as Maverick, Sprinter or Voyager. Drug-eluting
stents (DES) were used in 16 patients (7 Cypher, 9 Taxus) and
2 patients received bare metal stent. Glycoprotein (Gp) (IIb/
IIIa) inhibitors were used in 6 patients. Angiographic success
was 100% and no in-hospital major adverse events were noted.
To conclude, bifurcation angioplasty using transradial
approach is feasible and kissing balloon inflation using 6 F
guiding catheters is possible. The availability of DES and Gp
IIb/IIIa inhibitors has improved the in-hospital success rate of
bifurcation angioplasty.
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Thrombolysis-facilitated percutaneous coronary
intervention (PCI) is a new concept in which thrombolytic
therapy and PCI are viewed as complimentary treatment
modalities. Early reperfusion, which is achievable with
thrombolytic treatment, is sustained with the performance of
immediate PCI. Consecutive cases of acute ST elevation
myocardial infarction (STEMI) (n=28) were given thrombolytic
treatment with intravenous (IV) streptokinase (1.5 MU over
1 hour) and were randomized to either early intervention arm
(n=14) or conservative arm (n=14). Coronary angiogram,
followed by intervention was permitted in conservative arm,
if indicated. All patients received 325 mg of aspirin at time of
admission. Patients randomized to intervention arm received
clopidogrel, 300 mg loading dose followed by 75 mg once daily
for 6 months, started after thrombolytic treatment. After
coronary angiography, patients who underwent PCI received
IV unfractionated heparin 5000 IU. All patients received 160
mg aspirin daily. Administration of beta-blockers, angiotensinconverting enzyme (ACE) inhibitors, statins and nitrates were
left to the discretion of treating physician. The end points of
the study were death, recurrent ischemia, need for urgent
target vessel revascularization (TVR) or a composite of death,
recurrent ischemia and need for urgent TVR. The mean age
was 56 years in Group I and 64 years in Group II (p=NS). 3/
14 (21.4%) patients in Group I and 4/14 (28.6%) patients in
Group II were females (p=NS). Prevalence of diabetes in Group
I was 5/14 (35.7%) and 4/14 (28.6%) in Group II (p=NS).
Group I received IV streptokinase within a mean window
period of 4.2 hours and Group II received IV streptokinase
within a window period of 5.1 hours (p=NS). 6/14 patients
(42.5%) in Group I and 7/14 (50%) in Group II had anterior
wall myocardial infarction (AWMI) (p=NS). Both groups had
6/14 (42.5%) patients with < 30% ST resolution after IV
streptokinase (p=NS). Patients randomized to Group I
underwent coronary angiogram and percutaneous
intervention within a mean time of 9.2 hours after the onset
of chest pain and 4.4 hours after the administration of IV
streptokinase. 12/14 (85.7%) patients underwent stenting of
the infarct-related artery. TIMI 3 flow in epicardial IRA was
achieved in 13/14 (92.9%) patients. There was one (7.1%)
death in each group (p=1.00). There were 3/14 (21.4%)
patients with recurrent ischemia in Group II, while there was
no incidence of recurrent ischemia in Group I (p=0.22). The
composite of death, recurrent ischemia and urgent TVR was
not significantly different between the two groups [1/14 (7.1%)
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v. 4/14 (28.6%) (p=0.33)]. There were 2 patients with mild
groin hematoma at the access site in Group I. There were no
instances of major bleed in either group. To conclude,
thrombolysis-facilitated PCI is a viable option in patients
presenting with acute STEMI myocardial infarction. Another
study with a larger sample size is needed to prove the beneficial
effects of this strategy.
Drug-Eluting Stents: Does Length Influence
Restenosis?
155
K Sharma, J Prajapati, S Dani, S Jain, H Joshi,
S Thanvi, S Ghosh, J Shah, H Shah, T Madan, A Jain
UN Mehta Institute of Cardiology and Research Centre, Ahmedabad
Restenosis rates appear to be in the range of
5%-6%. However, there is still a paucity of data about long
drug-eluting stents (DESs) specially with regard to restenosis
rates.This study attempts to evaluate the safety and feasibility
of long (> 20 mm) DES in Indian patients with coronary artery
disease (CAD) in real world situation including restenosis rate
and incidence of sub-acute thrombosis in comparison to short
DES. This was an open labelled, single centre study of 100
consecutive patients undergoing percutaneous coronary
transluminal angioplasty (PTCA) with DES at the institute from
1st January 2002 onward. Patients were followed up clinically,
regularly for six months. Check angiography was performed
at 6 months. Those who showed clinical evidence of ischemia
earlier were subjected to angiography earlier. Patients were
divided into 2 groups: Group 1, with stent length < 20 mm;
Group 2 with stent length > 20 mm). A total of 115 stents
were deployed in 100 patients. The two groups had similar
demographic and clinical characteristics. There were 96
paclitaxel- eluting stents (Infinnium and Taxus) and 19
sirolimus-eluting stents (Cypher and Pronova). The average
stent length in Group 1 was 15.86 mm and that in Group 2
was 26.73 mm. All 98 patients had undergone check
angiogram by the end of one year. On check angiogram, in
Group 1, 5/57 (8.77%) patients had instent restenosis (ISR)
while in Group 2, 4/41 (9.75%) patients had ISR which was
not significant (p>0.05). Implantation of long DES thus
appears to be safe and ISR rates are not affected by the length
of the stent. Further studies are, however, required to elucidate
these findings.
Initial Experience with Supralimus-Sirolimus
156
Eluting Indian Stent in Real World Cases
JS Prajapati, SI Dani, SR Jain, HS Joshi, SS Thanvi,
S Ghosh, K Sharma, J Shah, H Shah, T Madan, A Jain
Supralimus is a new and cheaper Indian drug-eluting stent
(DES) that comprises an assembly of 3 established components
as Matrix stent, sirolimus as the antiproliferative agent and
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biodegradable polymer as a drug carrier vehicle.This was a
single centre, open labelled, first in-human study to evaluate
the efficacy, safety, feasibility and immediate and intermediate
results of supralimus including instent restenosis (ISR),
subacute stent thrombosis (SAT), and MACE rate. Between
November 2003 to January 2005, 152 stent implantations
were done in 100 patients using 129 supralimus stents and
23 other stents. Among them, risk factor profile was diabetes
mellitus 33%, hypertention 59%, dyslipidemia 45%, smoking
22%, previous myocardial infarction (MI) 54%, left ventricular
(LV) dysfunction [ejection fraction (EF) <40%] 26%, previous
percutaneous transluminal coronary angioplasty (PTCA)
11%, stroke 2%. Vessels treated were single vessel in 58.9%,
double vessel in 18.6%, three vessels in 3.12%. Among them,
left anterior descending (LAD) target vessel in 61.5%, right
coronary artery (RCA) in 29%, left circumflex (LCx) in 8%.
Mean stent length was 20.59±12.79 mm. Of these, 11-14 mm
stents were in 21.70%, 16-19 mm in 37.21 %, > 23 mm in
41.08% patients. Average stent diameter was 3.07±0.72 mm;
<3.0 mm diameter stents were implanted in 20.16%. Among
lesion characteristic chronic total occluson (CTO) was in 15%,
thrombotic lesion in 16%, ISR in 8%, ostial lesion in 8%,
bifurcations in 5%. In majority of patients clinical, and if
required angiographic follow-up was done. In-hospital MACE
rate was 0%, MACE rate at 1 months was 1%, at 6 months
MACE rate was SAT in 1%, ISR in 3%, death due to MI in 1%.
Overall MACE rate was 6%. Event-free survival was 94% at 6
months. Supralimus – the new sirolimus-eluting stent from
India is found to be promising in the real world cases.
Supralimus stent implantation is safe, effective in reducing
restenosis, and shows excellent immediate and intermediate
results. However, long-term follow-up data is needed.
Profile and Intermediate Follow- up of
Percutaneous Revascularization in Diabetic
Patients
157
T Anees, Krishnakumar Nair, JA Tharakan, VK Ajith Kumar,
Thomas Titus, KM Krishnamoorthy, Vinod Thomas,
O Shajeem. Pradeep, Shomu, Rajendra Singh Bohra
Thiruvananthapuram
The aim of the study was to evaluate the clinical profile and
intermediate term follow-up of diabetic patients undergoing
percutaneous coronary intervention (PCI) in a single centre.
A total of 80 patients were studied with a mean age of 56.3±
9.5 years (range: 33–78 years). Of these 58 (72.5%) were
males. The major indications for PCI were primary angioplasty
in 4 (5%), post-infarction ischemia in 41 (51.3%), unstable
angina in 29 (36.3%) and chronic stable angina in 6 (7.5 %).
There were 12 (15%) patients who were on insulin, majority
were on oral anti-diabetic agents [n=69 (86.3%)] , 9 were on
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diet control alone. Majority of lesions were Type B [n=66
(82.3%)], and 9 were Type A and 5 had Type C lesion. A repeat
angiogram was done in 29 (36.3%) of the 80 patients. Eight
(10%) patients had restenosis defined as >50% lumen loss.
Comparison between insulin requiring and non-insulin
requiring groups showed no significant difference in age, sex,
lesion type, stent length, or effort tolerence or treadmill test
(TMT) positivity at 3 months and 6 months. There was no
significant correlation between insulin requiring status and
restenosis. Restenosis was not correlated with age, sex, lesion
type or lesion length, functional status or effort tolerance at 3
months or 6 months. However, stent size ≤2.5 mm showed near
significant correlation with incidence of restenosis (p=0.053).
NYHA class at one year showed a tendency toward significant
correlation with restenosis (p=0.080). 31 patients had a drugeluting stent (DES). Comparing diabetics who had DES versus
bare metal stent, presence of bare metal stent was significantly
correlated with positive TMT at 6 months (p=0.09). The
presence of DES was not correlated with effort tolerance or
negative TMT at 3 months. There were no significant
differences in age, sex, indication for PCI or insulin requiring
and non-insulin requiring status between diabetics who had
DES versus those who had bare metal stent. Mortality was not
analyzed as there were only 2 deaths in the population. In
conclusion, NYHA functional class at one year had a tendency
toward correlation with restenosis. Presence of bare metal
stents in diabetics was significantly correlated with positive
TMT at 6 months and there is a near significant correlation
between stent size ≤ 2.5 mm and restenosis.
Pre-Treatment with High-Dose Statin
158
Improves TIMI Perfusion Grading after
Primary Percutaneous Coronary Intervention
Debabrata Roy, BP Chatterjee, Sunip Banerjee
Rabindra Nath Tagore International Institute of Cardiac Sciences,
Kolkata
This retrospective study was undertaken to assess whether
a high dose of statin use (atorvastatin: 40 mg daily) compared
to standard low dose (atorvastatin 10 mg/simvastatin 10/20
mg daily) improved TIMI perfusion grading (TMPG) after
primary percutaneous transluminal coronary angioplasty
(PTCA)-stenting for myocardial infarction (MI), owing to better
pleiotropic action. A total of 64 patients who underwent
primary PTCA-stenting after MI, over last 2 years were enrolled
for the study. There was no significant difference in the baseline
characteristics between the high and low-dose statin groups.
The PTCA-stenting angiograms were reviewed by an
independent observer to assess TMPG. The result are presented
in the table.
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Atorvastatin 40 mg
Low dose statin
No. of Pts.
TMPG (I+II)
TMPG III
20
44
22%
56%*
78%
46%**
*p<0.05, ** p<0.05 TMPG: TIMI perfusion grading
We conclude that pre-treatment with high dose of atorvastatin
improve TMPG and thus, the outcome after primary PTCAstenting for MI.
Long Lesion Stenting with Drug- Eluting
Stents
159
Tarun Praharaj, A Mishra, S Dutta, D Kahali, AK Kar,
Tanuja De, S Chowdhury, Sudipa Ghosal
The objective of this study was, to assess the acute and longterm follow-up of patients following drug- eluting stenting
(Cypher) of long coronary lesions. In our institution, 70
patients over last 1 year required long lesion stenting (> 30
mm). The mean age of patients was 58±72 years. Thirty
patients were females, 30% patients were hypertensive, 40%
were dyslipidemic, 35% were diabetic, 35% were smokers and
10% had positive family history of ischemic heart disease
(IHD). About 60% patients had chronic stable angina while
remaining 40% had either post-infarct angina (30%) or
unstable angina (30%). Mean length of stents used was
30±0.5 mm. Left anterior descending (LAD) was stented in
42% lesions, right coronary artery (RCA) in 40% and left
circumflex (LCx)/obtuse marginal (OM) in 12% lesions.
Glycoprotein (Gp) IIb/IIIa inhibitors were used in 50% patients.
Procedural success was achieved in all (100%) patients. Oneyear clinical follow-up was done for all patients. No death,
myocardial infarction (MI) or recurrence of angina was
observed. Follow-up treadmill test (TMT) was also done in 75%
of patients. The results were encouraging as the test results
were negative with significant improvement in exercise
tolerance in all patients. Use of long drug-eluting stents
(Cypher) is safe with excellent immediate results and good
improvement on long-term follow-up.
Nine-month Clinical Follow-up in Patients
Receiving a Combination of Drug-Eluting
Stents along with Bare Metal Stents during
the Same Intervention
160
Jyoti Kusnur, M Vijaykumar, C Rajiv, KU Natarajan,
T Rajesh, Prakash Kamath, KK Haridas
Amrita Institute of Medical Sciences, Kochi
This study sought to assess the myocardial infarction (MI),
death, and angina requiring repeat revascularization during
9 months follow-up in patients receiving combination of
paclitaxel-eluting stents (PES) and bare metal stents (BMS) in
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the same intervention. Patients-related factors, lesion
morphology as well as stent properties are implicated in the
pathogenesis of instent restenosis. We retrospectively studied
the clinical outcome during 9 months following stenting with
a combination of BMS and drug-eluting (paclitaxel) stent in
the same patient. Fifty-five patients underwent stenting with
combinations of BMS and DES between May 2003 and July
2004. There were 51 (92%) males and 4 (8%) females between
41 and 81 years (mean: 54±9.4 years). Forty five percent of
patients were diabetic and 64% were hypertensive; 21 (38%)
had triple vessel disease, 1 (2%) had left main disease, 30 (55%)
had double vessel disease and 3 (5%) had single vessel disease.
A total of 136 stents were used (2.5 stents/patient) of which
65 (48%) were DES and 71 (52%) were BMS. The indications
for BMS were edge dissection, vessel size, and socio-economic
reasons. Five patients received 4 stents each, 16 had 3 stents
and the remaining 34 had 2 stents each. 65 DES (1.18 stent/
patient) with a mean length of 21.6±6 mm and diameter of
2.99±0.3 mm were placed in the following locations - left
main: 2 (3%), left anterior descending (LAD): 43 (66%), right
coronary artery (RCA): 13 (20%) and left circumflex (LCx): 7
(10%). Of the lesions that were treated with DES, 38 (59%)
were Type B, 25 (38%) were Type C, and 2 (3%) lesions were
Type A. 71 BMS (1.3 stent/patient) with mean length of
15.1±5.3 mm and diameter of 2.8±0.42 mm were placed in
LAD: 7 (10%), RCA: 27 (38%), LCx-36 (50%) and 1 for
saphenous vein graft (SVG). The lesion morphology was Type
B: 44 (62%), Type C: 18 (25%) and Type A-9 (13%). During
the entire follow-up of 9 months in 47 (85%) patients, there
was 1 (2%) death and 3 (6%) reinterventions for recurrence
of angina. One patient had restenosis of both BMS and DES, 1
had restenosis of BMS and 1 underwent PCI for a new lesion.
Combination of DES and BMS for compelling indications is
feasible and is not associated with increased mortality and
repeat revascularization.
Reconstruction of Saphenous Vein Graft—
Instent Restenosis with Drug-Eluting Stents:
A Case Report
161
J Naik, BP Chatterjee, S Banerjee
Kolkata
A 64-year-old hypertensive ex-smoker Bangladeshi male
subject with triple vessel coronary artery disease (CAD) and
compromised left ventricular (LV) systolic function underwent
coronary artery bypass grafting (CABG) surgery twice [(LIMA
to left anterior descending (LAD) and saphenous vein graft
(SVG) to posterior descending artery (PDA) in 1991; SVG to
LAD and obtuse marginal (OM) in 1994]. The patient became
symptomatic again necessitating graft angioplasty and
stenting with bare metal stent (SVG to PDA), in the year 2000.
In the year 2004, the patient developed class III anginal
symptoms again and coronary angioplasty revealed significant
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thrombus burden and 95% focal instent restenosis (ISR) in the
SVG graft to PDA. Decision of interventional reconstruction
of the ISR was taken. Thrombosuction was done to reduce the
thrombus burden. It was followed by deployment of two long
drug-eluting stents in the SVG to PDA – in the instent restenosis
segment and adjoining diseased area. TIMI III flow was
achieved. Six months follow-up angiography revealed patency
of the reconstructed ISR segment of SVG to PDA. The longterm follow-up is awaited.
Drug-Eluting Stents versus Bare Metal Stents
in Diabetic Patients undergoing Elective
Percutaneous Coronary Intervention
162
Sanjay Tyagi, Vijay Trehan, Saibal Mukhopadhyay,
Asit Khanna, Jamal Yusuf, Mohit D Gupta, R Batra,
Naveen Bhamri, MP Girish, Himanshu Dabral
Percutaneous coronary intervention in patients with
diabetes mellitus is associated with high rate of restenosis and
repeat revascularization due to excessive neointimal
proliferation. We report our experience of safety and efficacy
of drug-eluting stents (DES) in diabetic patients as compared
to bare metal stents (BMS). A total of 194 diabetic patients
(from January 2004 to June 2005) with de novo coronary
artery lesions were included; 94 of them received DES and
remaining 100 received BMS. Among DES group, 70 patients
received sirolimus-eluting stents and remaining 24 received
paclitaxel-eluting stents. DES reduced the rate of binary
angiographic restenosis by 78% (6.9% v. 36.4%, p < 0.0001),
and reduced the 12 months rate of target lesion
revascularization (TLR) by 61% (7.1% v. 21.7%, p=0.0007),
target vessel revascularization (TVR) by 54% (11.9% v. 23.7%,
p< 0.004), and composite of major adverse cardiac events
(MACE) by 46% (15.9% v. 28.9%, p=0.01). The one-year rates
of cardiac death (1.7% v. 2.2%), myocardial infarction (3.7%
v. 5.9%), subacute thrombosis (0.8% v. 0.9%) were comparable
between DES and BMS group, respectively. In conclusion,
implantation of DES compared to BMS in de novo coronary
lesions reduces MACE in patients with and without diabetes
mellitus. DES is highly effective in reducing angiographic
restenosis in patients with diabetes mellitus.
Non-Left Anterior Descending Single Vessel
Disease: Is it Worth Intervening?
163
RPS Bharadwaj, Mohd Ahmed, Ramesh Thakur,
Gagandeep Singh, Subrat Akhoury, Suvir Gupta, J Rajagopal
LPS institute of Cardiology, Kanpur
We compared the long-term prognosis of patients with de
novo single vessel disease of left circumflex (LCx), right
coronary artery (RCA), Ramus or their branches—those who
underwent intervention within the first 6 months with patients
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who were not initially revascularized. The patients (n=155)
who underwent coronary angiography at our hospital from
May 1997 to January 2002 and were diagnosed to have
significant single vessel disease (SVD) of LCx or Ramus or RCA
(or their major branches) were followed-up annually till
January 2005, for a minimum period of 3 years with regard
to their clinical status, anginal class, number of cardiovascular
events and recurrent hospital admissions for myocardial
infarction (MI) or unstable angina – into the 2 categories. Of
155 patients, 135 (males 110; females 25) could be followedup. Eighty-five (63%) patients had RCA lesions and 50 (37%)
had LCx lesions. Of these, 29 patients had undergone
angioplasty within 6 months. All were on standard
medications. Baseline characteristics like previous MI, diabetes,
smoking and left ventricular ejection fraction (LVEF) were
nearly the same. At 3 years of follow-up, the number of events
were significantly lower in the early revascularization group
compared to the conservative group [MI: 2 (6.9%) v. 32
(30.3%), unstable angina (USA): 8 episodes v. 70 episodes,
death:1 (3.5%) v. 8 (7.5%), the former 2 being statistically
significant]. There was also a significant need for
revascularization in the conservative group; 22 (20%) versus
2 (7%) needed repeat percutaneous coronary intervention
(PCI). There seems to be definite advantage of early
intervention in single vessel disease – irrespective of its origin
– left arterior descending (LAD) or non-LAD.
Sirolimus-Eluting Stent in Long Segment
Disease
164
S Tyagi, V Trehan, MP Girish, MD Gupta, R Batra,
Ramakrishnan, B Bharti, Dinesh Raj, BS Vivek
Instent restenosis remains a significant problem especially
in patients with long segment disease and in patients with
small coronary arteries. We aimed to study the incidence of
restenosis in patients with long segment disease who undergo
percutaneous transluminal coronary angioplasty (PTCA) and
stenting with bare metal stent (BMS) and drug-eluting stent
(DES). Patients with symptomatic coronary artery disease
(CAD) who were amenable to catheter-based treatment, with
lesion length >30 mm were included in the trial. Patients with
pre-existing renal dysfunction, recent cerebrovascular accident
(CVA), malignancy and other severe systemic disorder were
not considered for inclusion. A total of 305 PTCA and stenting
of long segment lesions were done till June 2004. There were
195 (63.93%) male patients and 110 (36.06%) females. The
mean age of male patients was 50.18±19.17 years and mean
age of female patients was 59±16.25 years. Out of 305
patients, 210 (68.85%) received a DES and 95 (31.14%)
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received a BMS. All patients received pre-procedure aspirin
(150 mg/day) and clopidogrel (loading of 600 mg, followed
by 150 mg/day). There were 2 cases of subacute stent
thrombosis in the DES group and 1 case of subacute stent
thrombosis in the BMS group. At the end of 1 year, 270
(88.5%) patients were available for folow-up, 190 (70.3%)
patients in the DES group and 80 (29.7%) patients in the BMS
group. There were 20 (25%) patients with restenosis in the
BMS group and 10 (5.26%) patients with restenosis in the DES
group. We conclude that the rate of restenosis is less in patients
with long segment disease who undergo stenting with DES
when compared to BMS. However, subacute stent thrombosis
was not significantly different between the groups.
Percutaneous Intervention of Patients with
Left Main Coronary Artery Disease
165
S Tyagi, V Trehan, MP Girish, MD Gupta, P Singh
Traditionally, coronary artery bypass graft surgery (CABG)
has been the treatment of choice for left main coronary artery
(LMCA) disease. With the advent of stents, percutaneous
coronary intervention (PCI) has provided an alternative form
of therapy for such patients. We report our experience of PCI
in LMCA disease; 15 patients who presented to us with stable
angina pectoris or acute myocardial infarction (MI) with
significant LMCA disease were included in the study between
June 2003 and June 2004. Patients with pre-existing renal
dysfunction, recent cerebrovascular accident, malignancy and
other severe systemic disorder were not considered for
inclusion. Out of 15 patients, 12 (80%) were male patients
and 3 (20%) female. 13(86.67%) underwent elective stenting
and 2 (13.33%) emergency stenting of LMCA because of acute
MI and cardiogenic shock. The mean age was 49±12.56 years
of male patients and 58.5±10.55 years for females. Of the
two patients who underwent emergency stenting of LMCA,
one was a male patient of 35 years and another was a female
patient aged 36 years. There were 9 (60%) cases of ostial LMCA
disease, 4 (26.67%) with LMCA shaft disease and 2 (13.33%)
with distal LMCA disease. The mean diameter of stent used for
LMCA was 3.95±0.80 mm. The immediate procedural success
was 100%. There were no untoward event during the 30 days
post-procedure follow-up period. At the end of one year followup there was one case (6.6%) of instent restenosis which was
successfully dealt with cutting balloon angioplasty initially
with 2.0×10 mm balloon followed by dilation with
3.0×10 mm balloon. This patient had undergone LMCA
stenting for distal LMCA disease. In the present day scenario,
percutaneous intervention of LMCA is feasible, safe and
effective alternative to CABG in carefully selected population.
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Sirolimus-Eluting Stent Implantation in Small
166
Vessel Disease: Angiographic and Clinical
Results
S Tyagi, V Trehan, MP Girish, MD Gupta, A Nigam,
N Bhamri, J Yusuf, S Mukhopadhyay
Drug-eluting stents (DES) are under evaluation. We aimed
to study the incidence of restenosis in patients with small vessel
disease who undergo percutaneous trasluminal coronary
angioplasty (PTCA) and stenting with bare metal stent (BMS)
and DES. Patients with symptomatic coronary artery disease
(CAD) who were amenable to catheter-based treatment with
reference coronary diameter of <3 mm size were included in
the trial. Patients with pre-existing renal dysfunction, recent
cerebrovascular accident, malignancy and other severe
systemic disorder were not considered for inclusion. A total of
410 PTCA and stenting were done between June 2003 to May
2004. There were 297 (72.52%) male patients and 112
(27.47%) females. The mean age of male patients was
48.13±17.14 years and mean age of female patients was
57±15.10 years. Out of 410 patients, 108(26.37%) received
a DES and 302(73.62%) received a BMS. All patients received
pre-procedure aspirin (150 mg/day) and clopidogrel (loading
of 600 mg, followed by 150 mg/day). The number of cases of
subacute stent thrombosis was comparable in both the groups
(3 patients in the BMS group and 1 patients in the DES group
had stent thrombosis at 5 months). At the end of 1year followup, 370 (90.24%) patients underwent restudy; 88 (23.78%)
in the DES group and 282(76.2%) in the BMS group. Four
(4.5%) patients in the DES group and 90 (31.9%) patients in
the BMS group had angiographic restenosis. We conclude that
DES is far superior to BMS in the percutaneous treatment of
small vessel CAD with comparable rates of subacute stent
thrombosis.
Direct Stenting versus PTCA and Stenting
with Drug-Eluting Stents
167
Sanjay Tyagi, Vijay Trehan, MP Girish, Mohit D Gupta,
Jamal Yusuf, Praveen Singh, R Batra, S Ramakrishnan,
S Anandaraja, A Nigam
Percutaneous tramsluminal coronary angioplasty (PTCA)
and stenting of the diseased coronary arteries is an established
mode of treatment of symptomatic patients with coronary
artery disease (CAD). We analyzed immediate and short-term
results of direct stenting versus PTCA and stenting with drugeluting stents (DES). Patients with symptomatic CAD amenable
to catheter-based treatment and who were admitted to our
cardiology ward constituted the study population. Patients
with pre-existing renal dysfunction, recent cerebrovascular
accident, malignancy and other severe systemic disorder were
not inclued. Patients with total occlusion and patients with
densely calcified coronary arteries were not considered for
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direct stenting. A total of 250 (72%) patients underwent
stenting with DES between June 2003 and May 2004. There
were 180 (72%) male and 70 (28%) female patients. The mean
age of male patients was 49.6±15.8 years, and of female
patients was 57.85±14.5 years. Twenty (8%) patients
underwent direct stenting of the diseased coronary artery.
There was no difference between the final luminal diameters
in both the groups (2.95±0.75 mm in the direct stenting group
and 3.10±0.65 mm in the PTCA and stenting group). There
were 3 cases of subacute stent thrombosis (all in the PTCA
and stenting group, 1 patient had stent thrombosis at the end
of 5 months, he discontinued clopidogrel for 10 days prior to
the event). At the end of 1 year, a total of 217 (86.8%), 14
(70%) in the direct stenting group and 203 (88.2%) in PTCA
and stenting group underwent restudy. Restenosis rate was
comparable between the two groups; 6.89% patients in the
PTCA and stent group and 7.1% patients in the direct stent
group. To conclude, in selected cases, direct stenting with a
DES is as effective as PTCA and stenting with DES.
Direct Coronary Stenting without
Predilation: Safety, Feasibility, Predictors of
Success, Immediate and Late Outcomes
168
SN Routray, CK Mishra, UK Pattnaik, HN Mishra,
M Behera
Direct stenting of the lesion without pre-dilation offers
certain theoretical and practical advantages. In the present
study we prospectively analyzed the feasibility, safety, success
rate, in-hospital complications and one-year follow-up in
patients undergoing direct stent implantation at our center,
and evaluated the predictors of clinical and angiographic
outcomes. 102 patients (males: 89, females: 13) with 106
lesions were enrolled in the study. Presentation was chronic
stable angina (CSA), unstable angina (UA) and myocardial
infarction (MI) in 17 (16.6%), 33 (32.3%) and 47 (46.1%)
patients, respectively. The target vessel was left anterior
descending (LAD) in 68 (64.2%), left circumflex (LCx) in 13
(12.3%) and right coronary artery (RCA) in 25 (23.5%). The
mean diameter stenosis was 74.5±0.54% and minimum
luminal diameter (MLD) was 0.79±0.72 mm. The stents were
deployed at a mean pressure of 12.2±1.89 atm. The average
length of stent was 19.32±3.87 mm (range: 12-33 mm) and
average diameter was 3.08±0.31 mm (range: 2.5–3.5 mm).
Driver stent (Medtronic, USA) was used in 56 lesions and DES
Cypher stent (Cordis, USA) in 38 lesions and others in rest.
Procedural success was 92.4%. No patients had any major
adverse cardiac event (MACE) in 30 days. During long-term
follow-up for a mean period of 15.6±5.6 months, 5, 2 and 3
patients had CSA, unstable angina (UA) and acute myocardial
infarction (MI), respectively. Thus, it may be concluded that
direct stenting is safe and feasible with high success rate. The
long-term outcome is favorable.
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Transradial Approach for Coronary
Angiography and Angioplasty
169
H Malhotra, S Shah, N Tanwar, R Pothiwala, K Jani,
F Panchal, S Suryavanshi, K Thakkar, N Vayada,
K Fonseca, R Radadiya, S Gupta, SM Shah, A Ranjan,
T Patel
Transradial (TR) approach has gained popularity in some
interventional centers and has become the gold standard for
the coronary procedures. We present our data of safety and
feasibility of TR coronary procedures. From December 2001
to April 2005, 15103 patients underwent coronary
angiography (CAG) and coronary interventions (PCI). Out of
those patients, TR route was attempted in 14720 patients
(suitable Allen’s test) and was successfully completed in 14308
(97.2%) cases. In 412 (2.8%) patients, the procedure was
completed from the transfemoral route. Following data was
analyzed for the patients who had successful TR coronary
procedures. In the TR group, 10488 (73.3%) patients
underwent CAG and PCI was attempted in 3820 (26.7%)
patients. The mean age was 62.6±10.8 years, and 11017
(77%) were men. In 671 (4.7%) patients, the left radial
approach was required. In CAG group, 1143 (10.9%) patients
had normal coronaries, 388 (3.7%) had slow flow in coronary
arteries and 8957 (85.4%) patients had obstructive coronary
artery disease. PCI was attempted in 3820 patients (4673
lesions) with angiographic success (per lesion) of 97%. Direct
stenting (without pre-dilation) was attempted in 2429 lesions
(52%) and successfully performed in 90% (2186 lesions); the
remaining 243 (10%) lesions were pre-dilated to complete the
procedure (overall success 100%). Conventional stenting (with
pre-dilation) and plain balloon/cutting balloon angioplasty
were attempted in 1823 (39%) and 421 (9%) lesions,
respectively. The success rate in this combined group was
94.2%. All patients were ambulatory on the day after the
angioplasty procedure, if clinical condition permitted. In all
patients, the sheath was taken out immediately after the
procedure and local compression was given using a Terumo
device or compression bandage. None of the patients suffered
from ischemia of the hand or impairment of hand function.
No patient had a major bleeding from vascular access site
requiring blood transfusion. Minor hematoma was noticed in
148 (1%) patients. Hematoma extending up to mid-forearm
occurred only in 28 patients. Major complications occurred
in 4 patients (cerebrovascular accidents); and all recovered.
Radial artery spasm and pain was noted in 8.2% and 4%
patients, respectively. Six patients had a small pseudoaneurysm, out of those 3 required surgical treatment and 3
were compressed under ultrasonographic guidance. Thus,
coronary procedures can be performed safely using the TR
approach with relatively few vascular complications and with
better patient comfort.
170
for ST Segment Elevation Myocardial
Infarction in an Asian General Hospital
without On-site Cardiothoracic Surgery
J Lingamamaicker, VYT Lim, KS Tan, CH Tan, PP Goh,
KL Tong, KT Gerard Leong, BC Chang, TT Oo, S Vidya,
K Kalaiyarasi
Changi General Hospital, Singapore and National University of
Singapore, Singapore
For acute ST-elevation myocardial infarction (STEMI),
primary percutaneous coronary intervention (PCI) is
increasingly seen as a superior reperfusion therapy to
fibrinolytic therapy with improved PCI techniques. The
requirement for emergent coronary artery bypass surgery
(CABG) has decreased significantly. We present our experience
in a hospital, which does not have on-site cardiothoracic
surgery facilities. This was a two-year registry of 132 patients
from January 2003 till December 2004 who presented with
STEMI and were sent to the cardiac catheterization laboratory
for acute PCI. The primary outcome measured were, inhospital major adverse cardiac events (MACE), MACE at 30
and 180 days and door-to-balloon time. 132 patients (100%)
underwent cardiac catheterization for acute myocardial
infarction (MI). Stenting was performed in 129 (97.73%)
patients. Distal protection device was used in 64 (48.48%)
patients. Glycoprotein IIb/IIIa inhibitors were used in 32
(24.24%) patients. There were no peri-procedural
complications in 97.67% of patients. Two patients had
dissection of the coronary artery and were treated with overlap
stenting. One patient had stent dislodgement and another stent
was deployed to crush the dislodged stent. Two patients had
subacute stent thrombosis, one underwent another PCI and
another was transferred for early CABG. The mean door-toballoon time was 96.26 min. There were no in-hospital MACE
in 127 (98.44%) patients who underwent PCI. At 6 months
follow-up, survival from all-cause mortality was seen in 126
(97.67%) patients; 124 (96.12%) patients were MACE-free,
and 16 (12.12%) patients were lost to follow-up. The lack of
cardiac surgery backup, per se, need not limit the safety or
efficacy of acute PCI in a district hospital. Rigorous standards
for operators, staffing, equipment, laboratories, case selection
and outcomes must be adopted to make it safe and successful.
Aneurysm Formation after Implantation
of Drug-Eluting Stents: Report of 3 Cases –
Probable Hypersensitivity Reaction?
171
PK Grant, CN Makhale, MS Hiremath, JS Hiremath,
RS Shinde, AC Mehta, M Durairaj
Grant Medical Foundation, Ruby Hall Clinic, Pune
Drug-eluting stents (DES) have reduced the frequency of
in-stent restenosis. However, most of the results have been
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derived from simple lesions in non-complex patients. But longterm safety data on DES is lacking. Here we present three
probable cases of DES hypersensitivity reactions. Two cases
showed aneurysm formation post-DES implantation and two
had bilateral extensive interstitial pneumonitis. Case1: An
elderly gentleman was implanted with sirolimus-eluting stent
in proximal right coronary artery (RCA). Two weeks later, he
presented with unstable angina and high grade fever. Coronary
angiography was done, which showed an aneurysm formation
at the proximal end of the stent with total occlusion.
Subsequently, the patient was sent for coronary artery bypass
grafting (CABG). Case 2: A 58-year-old female was implanted
with a sirolimus-eluting stent. Three weeks later, she was
admitted with fever, rash, breathlessness, pneumonitis,
bilateral pleural effusion and a pericardial effusion. Repeat
coronary angiography showed aneurysm formation in the left
anterior descending (LAD) artery. Case 3 : A 62-year-old man
was implanted with two sirolimus-eluting stents in RCA
following an inferior wall myocardial infarction. Four days later
he presented with severe bilateral necrotizing interstitial
pneumonitis.
Saphenous Vein Graft Percutaneous Coronary
172
Intervention
MS Hiremath, CN Makhale, PK Grant, AC Mehta,
RS Shinde, AS Sathe, M Durairaj
We present our data of 20 patients; these included 16 (80%)
males and 4 (20%) females. Mean age was 68.3 years. The
risk factors were hypertension in 18 (90%), diabetes mellitus
(DM) 12 (60%), smoking 2 (10%). Left ventricular ejection
fraction (EF) ranged from 30% to 60% with mean of 45%. The
presenting complaints were unstable angina: 15 (75%),
chronic stable angina: 3 (15%), acute myocardial infarction
(MI): 2 (10%). Vein grafts included saphenous venous graft
(SVG) to right coronary artery (RCA): 7 (35%), SVG to obtuse
marginal (OM): 9 (45%), SVG left circumflex (LCx): 2 ( 10%).
SVG to D1: 1 (9%) and SVG to ramus: 1 (5%). All lesions were
pre-dilated. Distal protection devices were used in 15 (75%)
patients. Fifteen (75%) patients received glycoprotein (Gp) IIb/
IIIa inhibitors, 10 (50%) received abciximab and 5 (25%)
received eptifibatide. Twelve (60%) patients received bare metal
stents. Six (30%) patients received drug-eluting stents. Two
patients received covered stents. Final vessel diameter was 3.54.25 mm. The mean diameter was 3.75 mm. None of the
patients had major adverse cardiac event (MACE). On followup of 15 patients for mean duration of 13 months, 12 patients
were symptom-free. One patient had effort angina, and 2
patients underwent coronary angiography for angina which
showed patent stents. It can be concluded that SVG
percutaneous coronary interventions (PCI) are safe and
effective revascularization therapy.
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Drug-Eluting Stents in ST Elevation Acute
173
CN Makhale, PK Grant, MS Hiremath, JS Hiremath,
SV Sathe, RS Shinde, AC Mehta, AS Sathe, M Durairaj
Safety and effectiveness of drug-eluting stents (DES) in
acute myocardial infarction (MI) remains unknown. Few
published series are available in the literature. We studied 32
cases of acute MI.. The incidence of major adverse cardiac
events (death, non-fatal myocardial infarction, reintervention)
was evaluated. Diabets mellitus (DM) was present in 10
(31.25%) patients. Primary angioplasty was performed in 20
(62.5%) patients and rescue angioplasty was performed in 12
(37.5%) patients. Anterior wall infarction was present in 18
(56.25%) cases and 14 ( 43.75%) had inferoposterior
infarction. Four (12.5%) patients had cardiogenic shock.
Procedural success (TIMI-3 flow) was achieved in 30 (93.75%)
patients. Angiographic no-flow phenomenon was seen in 2
patients. Glycoprotein (Gp) IIb / IIIa inhibitors were used in all
patients. Thrombectomy devices and/or thrombus suction
with Export catheter was used in 16 (50%) patients. In-hospital
mortality was 4 (12.5%) patients. Two (6.12%) patients had
reinfarction and required target lesion revascularization (TLR).
During clinical follow-up of 6 months, two patients had effort
angina and coronary angiography showed instent restenosis
and was tackled with DES. In this series, drug-eluting stent
implantation for patients with ST elevation acute myocardial
infarction was safe and predicatable.
Long Term (> 18 Months) Follow-up of
Paclitaxel-Eluting Stent in Native Coronary
Lesions
174
K Thakkar, A Ranjan, H Malhotra, N Tanwar, R Pothiwala,
R Radadiya, SM Shah, S Shah, T Patel
Development of restenosis within the stented segment is a
major limitation of bare metal stents (BMS). Drug eluting
stents (DES) claim to effectively decrease the rate of restenosis
at long-term follow-up as compared to bare metal stents (BMS).
However, the duration of these beneficial effects is unknown.
Of over 400 DES implanted at our centre for various coronary
artery lesions, 190 patients were stented with Taxus
(paclitaxel-eluting stent, Boston-Scientific, USA), and have
completed 18 months of clinical follow-up. We present our
data of long-term follow-up of these patients. Mean follow-up
duration was 21.7±4.5 months. The mean age of the group
was 59±6.2 years (range: 37-79 years); 154 (81%) patients
were men. The mean left ventricular (LV) ejection fraction was
42.6±15.3% (range: 10-70%) at the time of DES implant. A
total of 214 vessels were stented with 238 Taxus stents. The
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vessels stented were left main coronary artery: 4 (1.9%), left
anterior descending artery 140: (65.4%), right coronary
artery: 34 (15.9%) and left circumflex artery: 36 (16.8%). No
patient had any in-hospital major adverse cardiac events
(MACE). Three (1.4%) patients had dissections, which were
stented with BMS. All patients were discharged from the
hospital with stable cardiac status. Clinical follow-up is
available in 180 (94.7%) patients. Actuarial survival rate at
18 months was 96.6%. Ten (5.6%) patients developed MACE
at 18 months of follow-up. Six (3.4%) patients died (3 due to
progressive heart failure, 2 due to sudden cardiac death, 1 due
to non- cardiac death). Four (2.2%) patients had recurrence
of angina and required reintervention in the target vessel. A
majority of patients, 150 (83.3%) are asymptomatic and 20
(11.1%) patients have symptoms of heart failure due to LV
dysfunction. These 20 patients had negative treadmill exercise
test at 12 months post-DES implantation. Out of 150
asymptomatic patients, 104 (69.3%) patients have had a
treadmill exercise test, which was negative in all. Thus, Taxus
stent appears safe and effective with low MACE rate at 18
months of follow-up.
Minimizing Radial Artery Spasm during
Transradial Coronary Procedures
175
Sanjay K Chugh, RB Panwar, RR Kasliwal, Vivek Tandon,
Gaurav Minocha, Naresh Trehan
Radial artery spasm (RAS) is the Achilles heel of transradial
coronary procedures (TRCP). Reasons for RAS include (i)
Mismatch in radial artery (RA) versus sheath size specially in
those with small radial arteries, and (ii) Need for repeated
catheter exchanges and manipulation. The aim of this study
was to compare incidence of RAS and procedure time for right
(RRA) versus left radial access (LRA) with application of a
protocol to match sheath size with RA diameter. As per our
protocol, we selected sheath size as follows: 5 F, 6 F or smaller,
7 F or smaller, 8 F or smaller for >1.7 mm, > 2 mm, > 2.3 mm,
> 2.7 mm RA diameter (color Doppler ultrasound) respectively.
For RA of 1.4-1.6 mm we injected diltiazem 2 mg (sometimes
with 1-2 ml of 2% lignocaine) in the ipsilateral brachial artery
prior to sheath insertion in order to dilate the RA, and minimize
pain and spasm. Patients with RA < 1.4 mm were excluded.
Catheters with radial curves (RB, Kimny) were not available.
Judkin‘s catheters were first choice. We report the results of
301 consecutive transradial coronary angiography (TRCA)
(123 LRA, 178 RRA) and 73 transradial interventions (TRI)
(53 LRA v. 20 RRA). RA diameter and patient demographic
characteristics were similar between LRA and RRA. There were
13 patients with RA diameter of 1.4-1.6 mm in LRA group
versus 17 in RRA group (p=NS). Mean sheath size versus RA
size was 0.8±0.21 mm. Significantly, subclavian artery (SA)
tortuosity was noted on the right side in 9.5% compared to
only 1 on LRA. Significant RAS occurred in 8 (4%) with RRA
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and in only one with LRA. Tortuous SA was associated with
RAS (p<0.05). Procedure duration for TRCA was 22±8.3 min
for RRA versus 15±5.4 min for LRA (p=0.02). With matching
of sheath size to RA diameter, LRA was associated with RAS
in 1, while incidence of RAS was minimized in RRA. RAS
correlated significantly with SA tortuosity.
Primary Thrombosuction with Export
Aspiration Catheter during Percutaneous
Coronary Intervention in Acute Coronary
Syndrome : Acute Results and In-hospital
Outcomes
176
Gaurav Minocha, Sanjay K Chugh, Praveer Agarwal,
Mitu A Minocha, Vivek Tandon, Mohd Badrul Alam,
Rajneesh Kapoor, Madhukar Shahi, Suman Bhandari,
Balbir Singh, Atul Mathur, Praveen Chandra, A Seth,
T S Kler
Percutaneous coronary intervention (PCI) for acute
coronary syndrome (ACS) in lesions with a large thrombus
load increases the procedural complication rate. Thrombus
reduction with use of the Export aspiration catheter (EAC) has
been reported in primary PCI in ST elevation acute myocardial
infarction (STEMI) only. To the best of our knowledge, this has
not been described in the setting of the other ACS such as
unstable angina (UA) and non-ST elevation myocardial
infarction (NSTEMI). The objective of this study was to evaluate
acute angiographic results, procedural complications and
safety and efficacy of this technique in reducing thrombus
burden in ACS. The EAC, an over-the-wire device, is a
component of the Guardwire plus system (PercuSurge,
Sunnyvale, CA), which was originally developed for emboli
containment in saphenous vein graft and peripheral vessel
interventions. An empty syringe attached to the EAC was used
for thrombosuction before PCI in consecutive cases of ACS with
visible angiographic thrombus (filling defects, contrast
staining) unless the reference infarct-related artery diameter
was <2 mm. EAC thrombosuction was performed successfully
in 47 patients undergoing PCI (18 STEMI, 15 UA, 14 NSTEMI)
and gross thrombi were obtained from 23 (55%) patients.
Primary EAC aspiration was preferred in most patients.
Predilation was required prior to EAC aspiration in 22.8%
patients only. Thrombus load was completely removed in
57.1% patients with EAC aspiration alone. TIMI flow improved
following EAC aspiration alone in 97.1% patients, with TIMI
3 flow being restored in 71.4% patients. After definitive
treatment with stenting, TIMI 3 flow was restored in 98%
target vessels. There was transient slow flow in 9 patients.
Glycoprotein IIb/IIIa inhibitors were used in 65.7% patients
and the mean procedural time was 45±20 min. There was no
angiographic evidence of distal branch loss or vessel injury.
No major procedural or in-hospital complication occurred in
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any patients. EAC thrombosuction technique can be safely
applied for thrombus burden reduction in treating ACS patients
including UA, and both STEMI as well as NSTEMI. In this small
cohort, thrombosuction with EAC was associated with good
acute angiographic result and no significant procedural
complications.
Safety of Multivessel versus Infarct-Related
Artery Angioplasty for Patients with Acute
177
R Pothiwala, A Ranjan, N Tanwar, H Malhotra,
S Suryawanshi, R Radadiya, S Gupta, S Shah, T Patel
Age (years)
Male
Diabetes
Hypertension
Family history
Smoking
IRA
LAD 1
IRA
RCA 2
IRA
LCx 3
Non-IRA
LAD
RCA
LCx
Mean vessel diameter (mm)
Abciximab
IABP
Procedural success
Sub acute thrombosis
Procedure time (min)
In-Hospital MACE
Major bleeding
B.p65
Single vessel PCI
(n=30)
60±12.23
18 (60%)
20 (66.6%)
15 (50%)
15 (50%)
18 (60%)
17 (56.6%)
08 (26.6%)
5 (16.6%)
11 (36.6%)
13 (43.3 %)
7 (23.3%)
3.1±0.52
19 (63.3%)
8 (26.6%)
29 (96.7 %)
0 (0%)
15±5.6
2 (6.6%)
0
448
Transradial Interventions in Women: Is there
178
any Gender Bias?
K Jani, N Tanwar, S Shah, F Panchal, N Vayada, S Gupta,
H Malhotra, A Ranjan, T Patel
Patients with acute myocardial infarction (MI) may have
multivessel (≥ 2) disease. Intervention of non-infarct-related
artery (IRA) in the same setting [multivessel percutaneous
coronary intervention (PCI)] or at a later date (staged
procedure) are two options in such patients. Safety of
multivessel PCI in the setting of acute MI is not well established.
Unstable clinical status, hypotension, arrhythmias and
prolonged procedure time may lead to adverse outcome. We
retrospectively analyzed our data of multivessel PCI versus IRA
PCI followed by staged procedure to judge the safety of
multivessel PCI in acute MI subsets. We excluded patient with
single vessel disease, prior coronary artery bypass graft (CABG)
surgery, cardiogenic shock and patient with previous PCI. The
clinical and angiographic profiles of these patients were
retrospectively analyzed. Between April 2004 to April 2005,
55 patients underwent multivessel PCI [group II, n=25
(45.5%)] or IRA PCI followed by staged procedure [Group I,
n=30 (54.5%)] in other vessels at a later date. All patients
underwent the procedure through transradial (TR) route.
Patients' demographic, clinical and angiographic characteristic
as well as outcomes were compared.
Characteristics
The two groups were comparable in their clinical and
angiographic characteristics. The procedural success were
similar in two groups; however, the procedure time was
significantly higher in multivessel group. To conclude,
multivessel PCI through TR route can be performed in the
setting of AMI with equal success and safety as compared to
staged procedure.
Multivessel PCI
(n=25)
62±15.3
14 (56%)
18 (72%)
13 (52%)
13 (52%)
16 (64%)
14 (56%)
05 (20%)
06 (24 %)
10 (40 %)
12 (48 %)
8 (32 %)
3.0±0.61
18 (72%)
5 (20%)
24 (96 %)
1 (4%)
23.1±10.2
1 (4%)
0
Over 98% of percutaneous coronary interventions (PCI) are
performed at our centre through transradial (TR) approach.
There is no apparent difference between men and women as
far as radial access, procedure success and complications are
concerned. However, we retrospectively analyzed our data in
224 women to evaluate the overall success of PCI through TR
approach performed from April 2003 to May 2005. Mean age
of the patients was 60.4±10.3 years (range: 41-81 years).
Clinically, 92 patients (41.07%) had unstable angina, 28
(12.5%) had acute myocardial infarction (MI), 44 (19.7%) had
post-MI angina and chronic stable angina was present in 60
(26.8%) patients. Ninety-six (42.8%) patients were diabetic,
142 (63.3%) were hypertensive, 20 (8.9%) had dyslipidemia
and 78 (34.8%) patients had multiple risk factors. Radial access
was attempted in all and successfully achieved in 222 (99.1%)
patients (right in 208, left in 14 patients). In 2 patients, femoral
route was used to complete the procedure due to presence of
severe radial loop anomaly. Fifteen (6.69%) patients
complained of pain and spasm, which was relieved with
additional doses of spasmolytic cocktails. Single vessel PCI was
performed in 176 (78.5%) patients, 42 (18.7%) had double
vessel stenting and 6 (2.8%) patients had triple vessel stenting.
A total of 258 stents (67 drug-eluting stents) were deployed.
Average stent diameter was 2.9 ± 0.9 mm and mean length
was 17.2±6.4 mm. Mean procedural time and mean
fluoroscopic time was 20.2±8.5 min and 9.3±5.2 min,
respectively. Acute procedural success rate was 98.21%
(n=220). There was no in-hospital major adverse cardiac event
(MACE). One patient had sub acute thrombosis 7 days after
the PCI, which required reintervention. All patients were
followed clinically after 1 month for local site complications.
Four (1.7%) patients had a small pseudoaneurysm of the radial
artery, 3 required local compression under ultrasound
guidance and 1 required day care surgery. Incidentally, this
patient had pseudoaneurysm of femoral artery following
coronary angiography performed at another centre.
Asymptomatic radial artery occlusion was seen in 9 (4.0%)
patients. Two hundred six (91.9%) patients were followed for
a mean of 8.6±6.3 months (range: 1- 21 months). Recurrence
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Indian Heart J 2005; 57: 426–461
of angina was observed in 26 (11.6%) patients; 16 patients
underwent check angiography; 10 patients required target
vessel revascularization due to restenosis, while another 6
patients had developed de novo lesions. Five patients died (3 had
sudden cardiac death and 2 had progressive heart failure). TR
approach is safe, feasible and effective in women. There was
no difference in success rate, procedure and fluoroscopic times
or acute complication rate as compared to our overall data
but there was a higher tendency of pseudoaneurysms in
women. The mid-term follow-up results are comparable to
international data.
Transradial Angioplasty in ThrombusContaining Lesions
179
Pramod Kumar, BB Chanana, Amar Singhal
Mid-Forearm Hematomas in Transradial
Procedures
Maharaja Agrasen Heart Institute, New Delhi
V Anand Kumar, R Balaji, B Anupam, C Raghu
In last two years, 158 patients underwent percutaneous
transluminal coronary angioplasty (PTCA) after myocardial
infarction (MI) (primary or within three days of MI). Out of
these 20 patients had significant visible thrombus exceeding
the limits of the lesion necessating the use of any device. Out
of 20 patients, 18 were native and two were saphenous vein
grafts (SVG). Extraction catheter was used in all the patients
through a 6 F guidewire. In two patients distal protection
device was used. In one patient the distal protection device
could not be put because of heavy thrombus load and
procedure was abandoned. All except one required stenting.
All the patients received clopidogrel, aspirin and glycoprotein
(Gp) IIb/IIIa receptor antagonist. In one patient Intracoronary
urokinase was used. None of the patient had any local
complications or requirement of blood transfusions. It is
concluded that transradial approach is feasible in thrombuscontaining lesions and offers almost similar levels of comfort
for the use of various devices like extraction catheter or filter
devices.
Re-using Hardware in Transradial
Procedures
180
V Anand Kumar, R Balaji, B Anupam, C Raghu
During the 2 year period from January 2003-December
2004, a total of 2603 transradial procedures were done in our
institute (2179 coronary/peripheral angiographies, 418
coronary angioplasties, 6 renal angioplasties). We analyzed
the re-usability of different hardwares (vascular access
sheaths, angiographic guidewires, angiographic catheters and
guide catheters) of different manufacturers after resterilization with ethylene oxide gas technique. The vascular
access sheaths compared were Terumo-radifocus and
B.p65
Cordis transradial kit. The angiography guidewires compared
were Boston-Scientific-Starter, Daig-Guide right and Maxim
guidewire. The angiographic catheters compared were BostonScientific-Impulse, Medtronic-Safe steer, Cordis-Infinity-Proflo,
Terumo-TIG. The guiding catheters compared were CordisVista brite tip, Terumo-Heart rail and Medtronic-Launcher. Reusability was highest among vascular sheaths with TerumoRadiofocus (10.4 times). For angiography wires, BostonScientific-Starter (9.1 times), for angiography catheters,
Boston-Scientific-Impulse (14.2 times) and for guiding
catheters, Cordis-Vista brite tip (4.2 times) had highest reusable rate.
449
181
During the two-year period from January 2003 to
December 2004, a total of 2603 transradial procedures were
done (2179 coronary/peripheral angiographies, 418 coronary
angioplasties, 6 renal angioplasties). Vascular sheath sizes used
were 5 F in 2066 (79.37%), 6 F in 530 (20.36%), 7 F in 4
(0.15%) and 8 F in 3 (0.12%) cases. Glycoprotein (Gp) IIb-IIIa
receptor blockers were used in 98 (3.76%) cases. Mid-forearm
hematoma occurred in 19 (0.73%) patients. Nearly all resolved
with conservative management strategies including arm
tourniquet application, local ice-pack application and stopping
glycoprotein IIb-IIIa receptor blockers. We observed that midforearm hematoma was more commonly associated with (i)
radial artery dissection, (ii) use of glycoprotein IIb-IIIa receptor
blockers, (iii) use of large size vascular sheaths ≥7 F size, and
(iv) rescue procedures for retrieval of embolized material
(guidewires, stents etc). One patient developed compartmental
syndrome requiring decompression surgery. All others were
managed conservatively.
Thrombopulsion in Acute Coronary
Syndrome
182
Vijay Trehan, S Ramakrishnan, Naresh K Goyal, Bishwa
Bhushan Bharti, Vimal Mehta, S Anandaraja, MP Girish,
Mohit Dayal Gupta, Bhola Shankar Vivek, Dinesh Raj,
Sanjay Tyagi
Patients with acute coronary syndrome (ACS) - ST elevation
myocardial infarction (STEMI and non-ST elevation
myocardial infarction (NSTEMI) often present at odd hours,
and in younger and smaller centres often not catered to by the
most experienced interventionists. Angiographically these
patients usually have thrombus-containing lesions. The
availability and the expertise in using the various
11/24/2005, 10:47 AM
Indian Heart J 2005; 57: 426–461
thrombectomy and distal protection devices in the above
situations are limited. We describe a relatively simple technique
of thrombopulsion for fragmentation and pushing of
thrombus into smaller branches of epicardial arteries. We
studied 50 consecutive patients undergoing percutaneous
coronary intervention (PCI) in whom thrombopulsion was
done. Twenty-eight patients had acute STEMI and
thrombopulsion was done along with primary angioplasty.
Twenty-two patients had unstable angina (USA)/NSTEMI. The
culprit vessel was left anterior descending artery (LAD) in 33,
right coronary artery (RCA) in 15 and left circumflex (LCx) in
2 patients. In all the patients, dilations with 1.5 mm to 2.5
mm balloons were done and the resultant TIMI flow was 0-2.
Then, the thrombus was pushed with a partially inflated 1.5
mm to 2.5 mm balloon distally into the culprit artery or to
one of its branches. This resulted in TIMI 3 flow in 45 patients
and TIMI 2 flow in 5 patients. There was significant
improvement in TIMI flow and myocardial blush in all these
patients. The technique of thrombopulsion is simple and
inexpensive. It is an effective technique in improving TIMI flow
in selected acute thrombus-containing lesions specially when
thrombectomy and distal protection devices are unavailable.
Further randomized comparisons to other thrombectomy
devices are required.
Intravenous Nicorandil in Patients with
Acute Coronary Syndromes undergoing
183
AJ Swamy, M Rohit, A Bahl, YP Sharma, KK Talwar
Post Graduate Institute of Medical Education and Research,
Chandigarh
The role of intravenous nicorandil in patients with acute
coronary syndromes (ACS) remains uncertain. The purpose
of this study was to evaluate the effect of intravenous
nicorandil on clinical and echocardiographic outcome
measures in patients undergoing percutaneous coronary
intervention (PCI) for ACS. We evaluated systolic function,
diastolic function and regional wall motion abnormalities
before and one month after PCI for ACS. Intravenous nicorandil
was given for at least 48 hours in a dose of 3 mg/hour to 6
mg/hour as tolerated in a protocol-based escalation to 15
patients. One patient had acute myocardial infarction (MI), one
had accelerated angina, all others presented with postmyocardial infarction (MI) angina. Thirty-three patients were
smokers, 26% diabetics, 46% had hypertension, 33% had
pulmonary edema, 4 had recent inferior wall myocadial
infarction (IWMI), 10 had recent anterior wall myocardial
infarction (AWMI) and 1 had dynamic electrocardiographic
(ECG) changes. Prior to PCI, 20% patients had left ventricular
ejection fraction (LVEF) >50%, 33% had LVEF of 45-50%, 20%
had LVEF 40-44% and 26% had LVEF 35-39%. After one
month, LVEF improved in all except one patient. Sixty-three
percent patients had LVEF >50%, 13% had LVEF of 40-
B.p65
450
44%,one had LVEF 35-39%. Diastolic function indices
improved in 66% of patients. The wall motion score index
improved from a mean of 1.46 to 1.2.
Effect of Rosuvastatin 40 mg on Patients with
184
High C-Reactive protein after Percutaneous
Coronary Intervention: Results at 3 Months
Debabrata Roy, BP Chatterjee, Sunip Banerjee,
P Sahoo, J Naik
Rabindra Nath Tagore Internation Institute of Cardiac Science,
Kolkata
High C-reactive protein (CRP) level, a marker of
inflammation, is an independent predictor of unfavorable
outcome after percutaneous coronary intervention (PCI). So
far, steroid use was proposed in this situation to improve the
prognosis. In the present study, we used high dose of
rosuvastatin (40 mg once daily), irrespective of the low-density
lipoprotein (LDL) level, to assess its effect on CRP lowering and
improvement in major adverse cardiac events (MACE) after
PCI. A total of 96 patients (male: 84, female: 12) who
underwent percutaneous transluminal coronary angioplasty
(PTCA)-stenting were enrolled for the study. All of them had
high CRP levels (>0.3 mg/dl) after the procedure. Majority
(98%) were already on a statin (atorvastatin: 10-96%;
simvastatin: 20-4%). The mean LDL level was 108±12 mg/dl
at the time of entry. After enrollment, the patients were
randomly assigned to receive either rosuvastation 40 mg once
daily or allowed to continue the statins they were already on.
The two groups were followed up upto 3 months for MACE.
There was no significant difference in baseline characteristics
between the two groups. The result are presented in the table.
Rosuvastatin - 40
Atorvastatin-10/
Simvastatin - 10/20
n=↓
CRP
48
48
36%
15%*
MACE (Angina/MI/TVR)
0.8%
2.1%*
*p < 0.01, CRP: C-reactive protein; MACE: major adverse cardiac events;
MI: myocardial infarction; TVR: target vessel revascularization
We conclude that a high dose of rosuvastatin was more
effective in reducing CRP level after PCI and this was reflected
in reduced MACE in this group.
Silent Ischemia and its Effect on TIMI
Perfusion Grade after Percutaneous Coronary 185
Intervention
Debabrata Roy, Sunip Banerjee, BP Chatterjee, P Sahoo
Rabindra Nath Tagore Internation Institute of Cardiac Science,
Kolkata
Silent ischemia has been shown to be a marker for early
unfavorable outcome in patients with unstable angina (UA)
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Indian Heart J 2005; 57: 426–461
managed conservatively. The aim of the present study was to
assess the relationship between silent ischemia and TIMIperfusion grade (TMPG), another marker for unfavorable
outcfome, after percutaneous coronary intervention (PCI) in
patients with acute coronary syndrome (ACS) [unstable
angina (UA) and non-Q myocardial infarction (MI)]. A total of
105 patients with ACS (male: 95, female: 10) were enrolled
for the study. All the patients underwent 24-hour ECG
monitoring on admission. All of them had coronary
angiography and subsequently underwent percutaneous
transluminal coronary angioplasty (PTCA)-stenting within 72
hours of admission. TIMI perfusion grade after the procedure
was assessed in each patient. The patients were divided into
two groups depending on the presence or absence of silent
ischemia on electrocardiogram (ECG) (ST segment depression
>1 mm for >1 min). There was no significant difference in
baseline characteristics between the groups. The result are
presented in the table.
n
Group A
63
(Silent ischemia)
Group B
42
(No ischemia)
*p < 0.01, TMPG: TIMI perfusion grade
TMPG (I+II)
TMPG III
49
14
15*
27*
We conclude that patients of UA with silent ischemia have
worse TMPG following early invasive management. This
signifies an adverse prognosis for this group.
Maximum deployment pressure was 16±4 atm in patients
without stent thrombosis and 11±2 atm in patients with stent
thrombosis. Reference mean vessels diameter was 2.5±0.25
mm with stent thrombosis and 3.0±0.25 mm without stent
thrombosis (p<0.05). Average length of lesion was
19.87±5.37 mm without stent thrombosis and 21.28±6.73
mm with stent thrombosis (p<0.001). The rate of stent
thrombosis was 2.44%. Seventy-one percent stent thrombosis
was related to LAD PCI, 29% was present in LCx. All the stents
were deployed at low pressure and in small caliber vessel. Stent
thrombosis occurred in 2.44% of patients undergoing stenting
of native coronary artery lesions and receiving routine
antiplatelet therapy with aspirin plus clopidogrel. Our stent
thrombosis subjects were related to long lesion, smaller
reference vessel diameter and low-pressure stent deployment.
LAD was most frequently involved. Continuous efforts to
eliminate this complication are warranted given its serious
clinical consequence.
Effectiveness of Thrombectomy for Patients
with Non-ST Elevation Myocardial Infarction
187
Yoshiyuki Furuse, Toshiya Muramatsu,
Reiko Tsukahara Ito, Keisuke Hirano,
Shigeru Nishimura, Takaya Tsubota, Tomohi
Kawasaki Social Insurance Hospital, Kawasaki, Japan
Stent Thrombosis in the Era of Coronary
Stenting
186
MA Rahman, T Haque, A Khan, M Ahmed, M Hossain,
M Amin, AAS Majumder, SAM Husnayen, M Ali,
SA Haque, H Banoo, S Rahman
National Institute of Cardiovascular Diseases, Dhaka, Bangladesh
Factors leading to stent thrombosis after percutaneous
coronary intervention (PCI) have not been well established.
The incidence of stent thrombosis has declined with the
application of high pressure stent deployment along with use
of aspirin and clopidogrel. However, in the era of coronary
stenting, stent thrombosis remains a major life-threatening
risk. We, therefore, tried to find out the frequency of stent
thrombosis during PCI and factors related to it. Between 30
March 2002 and 31 July 2004, 286 consecutive patients
underwent coronary stenting. We excluded patients who
underwent coronary artery bypass surgery (CABG). A total
of 286 patients (351 lesions) were included; 279 patients (344
lesions) without stent thrombosis and 7 patients (7 lesions)
with stent thrombosis, 5 in left anterior descending (LAD) and
2 in left circumflex (LCx). Stent thrombosis was documented
angiographically in 6 patients and clinically in 1 patient.
B.p65
451
The aim of this study was to evaluate the effectiveness of
thrombectomy in patients with non-ST elevation myocardial
infarction (NSTEMI). Of 254 patients of acute myocardial
infarction (MI) admitted to our hospital from first January
2000 to April 2003, there were 54 cases of NSTEMI. Preprocedural TIMI-3 flow cases were excluded. Finally, 47
patients were enrolled in this study. The patients were divided
into various groups: the group for which thrombectomy was
performed (Group T, n=11), cases in which distal protection
was performed) (Group C). Coronary angiographic findings,
percutaneous coronary interventions (PCI) procedures, target
lesion revascularization (TLR), left ventricular ejection fraction
(LVEF) - acute and at 6 months were noted. Major adverse
cardiac events (MACE) [cardiac death, AMI, CABG, TLR) were
compared among the groups. Patients' background and
baseline coronary angiography finding were similar in both
groups. There were no differences in the procedures in the two
groups except for diameter of the stent(s) deployed (Group T:
3.4±0.5 mm, Group C: 3.1±0.3 mm). TLR and LVEF were
similar among both groups, however, cardiac events occured
less frequently in group T (Group T: 0% v. Group C: 16%, in
days). To conclude, intracoronary thrombectomy improves
myocardial reperfusion and reduces cardiac death in patients
with NSTEMI.
11/24/2005, 10:47 AM
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Use of a Novel Dedicated Coronary
Bifurcation Stent in Bifurcation Lesions
(Frontier Bifurcation Stent)
188
Aman Salwan, Teck Wee Wong, Dinesh Nair, Phillip Wong
National Heart Centre, Singapore
Percutaneous coronary intervention of coronary
bifurcations is associated with a low success rate, high rate of
complications and high incidence of target vessel
revascularization. This is a single centre, non-randomized
evaluation of Frontier bifurcation stent in 10 patients with 10
de novo bifurcation lesions. It is a revolutionary 2-wire, 2balloon single stent design that provides side branch ostial
scaffolding. The age range of patients was from 41 to 79 years,
mean age was 64.8 years and median age was 52 years. All
patients presented with recent unstable angina, myocardial
infarction and angina on exertion. Two patients had thrombus
at lesion site. Site of bifurcation lesion was left anterior
descending/diagonal in 8 patients and right coronary artery
(RCA)/ posterior descending artery (PDA) in 2 patients. Mean
contrast was 215 ml, mean screening time was 26.5 min and
mean procedure time was 54 min. Device success in main
artery was 100%. One patient had suboptimal side branch
implantation with residual stenosis of 70%.
occurred in one patient (procedure success in 98%). He
developed false passage with pericardial effusion. He was
stabilized and later sent for coronary artery bypass grafting
(CABG). One (2.08%) patient developed subacute stent
thrombosis on day 3. Seven patients had inducible ischemia
on follow-up. Coronary angiogram revealed stenosis or
progression of the lesion in 5 patients. Two patients underwent
CABG, 2 repeat coronary angioplasty, and one patient opted
for medical therapy. The major adverse cardiac events (MACE)
at the end of one year follow-up were death 4.1%, subacute
stent thrombosis 2.08%, Q wave MI 4.1%, restenosis 10.41%
and target vessel revascularization (TVR) in 8.33%. When
stenting is feasible, the location of the lesion in the LAD is not
predictive of worse outcome and consequently should not be
taken into account in the choice of the revascularization
strategy.
Acute and Mid-Term Results of Drug-Eluting
Stents in Acute Myocardial Infarction
190
K Thakkar, A Ranjan, N Tanwar, H Malhotra, R Pothiwala,
K Fonseca, S Gupta, S Shah, T Patel
Proximal Location of Stenosis in Left
Anterior Descending Coronary Artery:
Is it a Predictive Factor of Worse
Outcome in the Era of the Stent?
189
TN Sunil Roy, SV Praveen, Vikram Sankar, CG Sajeev,
Johnson Francis, CC Velayudhan, MN Krishnan,
K Venugopal
Medical College Hospital, Calicut
Lesions in the proximal left anterior descending artery
(LAD) account for a major proportion of coronary morbidity
and mortality. The aim of our study was to assess the major
adverse cardiac events in patients undergoing stenting of the
proximal LAD. Study comprised 48 patients who had
undergone stenting of the proximal LAD in our institution who
were prospectively followed-up for a period of one year. Mean
age of the population was 49±8.7 years (range: 33-65 years),
male-female ratio was 5:1. The distribution of predisposing
factors was: 25% had diabetes mellitus, 25% had hypertension
and 52% were smokers. There was history of previous
myocardial infarction (MI) in 41%, unstable angina in 20.83%
and 39% had effort angina. Lesions were single vessel disease
(SVD) in 25, double vessel disease (DVD) in 14, and triple vessel
disease (TVD) in 8. Six patients had total occlusion of the LAD.
The mean length of stenosis was 13.8+5.1 mm (range: 8-28
mm) and diameter of the vessel was 2.92±0.51 mm. Total of
56 lesions were addressed and 50 stents were deployed.
Diameter of the stents used were 2.5 mm in 14 patients, 3 mm
in 24 patients and 3.5 mm in 12 patients. Procedure failure
B.p65
452
Drug-eluting stents (DES) have been proven to reduce the
rate of restenosis and target vessel revascularization (TVR) as
compared to bare metal stents (BMS). However, the safety and
effectiveness of DES in acute myocardial infarction (MI) is not
well documented. Between January 2003 and January 2005,
76 patients (62 men; 81.6%) underwent percutaneous
coronary intervention (PCI) in acute MI with DES. Acute
results, in-hospital outcomes and mid-term clinical follow-up
were retrospectively analyzed. The mean age of the patients
was 56.7±11.1 years (range: 35-78 years). Twenty-nine
(38.2%) patients had hypertension, 21 (27.6%) had diabetes
mellitus and 18 (23.7%) patients were smokers. Dyslipidemia
and family history of ischemic heart disease was present in 17
(22.4%) and 13 (17.1%) cases, respectively; 41 (53.9%)
patients had anterior wall MI, 26 patients (34.2 %) had inferior
wall MI (2 with right ventricular MI) and 9 (11.8%) had
inferolateral MI. The mean left ventricular ejection fraction was
37.7±9.2% (10-60%). The infarct-related artery (IRA) was the
left anterior descending artery (LAD) in 41 (53.9%) patients,
right coronary artery (RCA) in 22 (28.9%) and left circumflex
artery (LCx) in 13 (17.1%) patients. Fourteen (18.4%) patients
had additional multivessel disease. All the IRAs were treated
with DES [Taxus 28 (36.8 %), Cypher 37 (48.7%), Pronova
11 (14.5 %). Two (2.6%) patients had dissections, which were
treated with BMS. Angiographic success was achieved in all
patients with TIMI grade 3 flow in 73 (96 %) patients. Major
adverse cardiac events (MACE) were observed in 2 (2.6%)
patients. One (1.3%) patient had subacute thrombosis and
required reintervention, another patient had MI due to side
branch occlusion which was treated conservatively. There was
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Indian Heart J 2005; 57: 426–461
no in-hospital mortality. A mean follow-up of 14.6 ± 6.7
months is available in 63 (82.9%) patients. Three (4.8%)
patients died, all were sudden cardiac deaths. Fifty-seven
(90.4%) patients are asymptomatic and 3 (4.8%) patients are
in a compensated congestive heart failure state. No early or
late stent thrombosis was documented. No patient required
reintervention during follow-up. To conclude, DES
implantation for patients with acute MI is safe and has good
mid-term results.
Trends in Pharmacotherapy Patterns of
191
Patients undergoing Percutaneous
Transluminal Coronary Angioplasty: A 5-Year
Review at a Tertiary Cardiovascular Center
Anil Vatwani, Prasanna Kumar, KK Mahesh,
Praveen G Pai, M Vijaya Kumar, T Rajesh, C Rajiv,
KU Natarajan, Prakash Kamath, KK Haridas
Management patterns of patients with coronary artery
disease (CAD) is a continuosly evolving process. Contemporary
cardiology management comprises implementation of
evidence-based medicine into clinical practice. In this study,
aimed to assess the impact of medical management patterns
for patients undergoing percutaneous transluminal coronary
angioplasty (PTCA) at a tertiary care cardiology center
retrospectively. Trends in pharmacotherapy as prevalent 5
years back were compared with present day management.
Drug
1999
(% of patients)
2004
(% of patients)
p value
Ticlopidine
Clopidogrel
Aspirin
Beta-blockers
ACE inhibitors
ARBs
Calcium channel blocker
Statins
Nicotinic acid
Other antilipids
87.54
0.00
98.30
70.18
14.71
04.71
39.42
57.35
0.00
0.94
0.13
99.86
98.20
97.35
42.42
14.74
08.20
95.96
02.50
02.22
NA
NA
0.88
0.000
0.000
0.000
0.000
0.000
NA
0.08
The majority of patients were male; however, the number of
female cases has shown an increase comprising 11.68% of
cases in 2004 versus 9.62% in 1999. Hypertension was
present in 38.67%, diabetes in 36.60% and peripheral vascular
disease in 1.13 % of patients undergoing PTCA in 1999 as
compared to 49.37%, 46.03% and 1.80% in 2004. The mean
age of patients who underwent PTCA was 53.80 + 9.24 in
1999 and 55.77 + 10.17 in 2004, with an increase in the
number of patients >70 years undergoing PTCA, from 3.38%
in 1999 to 10.98% in 2004. The pharmacotherapy trends
show a complete replacement of ticlopidine with clopidogrel
after the availability of the drug. The use of aspirin continues
to be high. The use of beta-blockers has increased from 70.18%
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in 1999 to 97.35% of patients in 2004. Also seen is an increase
in the use of angiotension-converting enzyme (ACE) inhibitors
and angiotensin-receptor blockers (ARBs) from 14.71% and
0.471%, respectively to 42.42% and 14.74%. Use of statins
has become more prevalent with 95.96% of patients receiving
it in 2004 as compared to 57.35% in 1999. Calcium channel
blocker usage has, however, shown a steep decline from
39.42% in 1999 to 8.20% in 2004. The usage of nicotinic
acid is still low at just 2.50% and use of other antilipid agents
though has shown a rise from 0.94% to 2.22% is still not widely
prevalent. Thus, with implementation of available evidence
the practice patterns have evolved, to rationalize
pharmacotherapy in patients undergoing PTCA, and pass on
the benefit of evidence-based medicine to the patients and
population at large.
Role of Bolus Dose of Abciximab in High Risk
192
Percutaneous Coronary Intervention—
Is Bolus Enough?
R Pothiwala, A Ranjan, N Tanwar, F Panchal, K Fonseca,
S Gupta, H Malhotra, S Shah, T Patel
Traditionally use of abciximab has been recommended as
a bolus followed by infusion for 12-18 hours after high-risk
percutaneous coronary interventions (PCI). However, in the
current PCI era, prolonged infusion of abciximab may not be
required because of the routine use of dual antiplatelet therapy,
improved device technology and further refinement in PCI
techniques. It also adds to cost constraints and increased
complications. abciximab bolus will give additional protection
during device manipulation, the time of maximum risk of
endothelial injury. We have used abciximab in bolus doses in
a majority of high-risk PCI and prolonged infusion was given
only in a few patients. We retrospectively analyzed the records
of such patients and analyzed the clinical outcomes and
complications. During April 2004 to April 2005, a total of 240
patients (186 men, 77.5%) who had received bolus dose of
abciximab during high-risk PCI. Out of these, 180 patients
(75%) were diabetics, 120 (50%) were hypertensive, and 140
(58.3%) were smokers. Out of 240, 50 patients (20.8%) had
anterior wall myocardial infarction (MI), 15 (6.25%) patients
had inferior wall MI, 130 (54.2%) patients had unstable
angina and 45 (18.8%) patients had stable angina. Procedure
was done through transradial route in 236 (98.3%) of
patients. All the patients were treated with usual doses of
aspirin, clopidogrel and heparin. Heparin was given
intravenously in an initial bolus dose of 70 IU/kg during the
PCI; the goal was to keep the activated clotting time (ACT)
between 300 s and 350 s. Heparin was continued by infusion
drip for at least 12 hours to maintain the activated partialthromboplastin time (APTT) at 1.5 to 2.5 times the control
value. Seventy-two (30%) patients had multivessel disease and
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Indian Heart J 2005; 57: 426–461
in 3 (1.25%) patients had left main disease. PCI was attempted
in 347 lesions in 240 patients. Coronary stents were put in
336 lesions and plain old balloon angioplasty was performed
in 11 lesions. Drug-eluting stents (DES) were used in 152
lesions and bare metal stents (BMS) in 184 lesions, 5 additional
BMS were deployed to tackle dissections. Hybrid stents (a
combination of DES and BMS) were used in 36 (15%) patients.
Left anterior descending artery (LAD) was intervened in 179
(51.6%) lesions, left circumflex (LCx) in 56 (16.1%) and right
coronary artery (RCA) in 112 (32.3%) lesions. Mean stent
diameter was 2.97 ± 0.51 mm and mean length of stent was
21.8±7.74 mm. Intra-aortic balloon pump (IABP) was used
in 12 (5%) patients. Procedural success rate was 100%. No
patient had major bleeding. Minor hematoma was found in
50 (20.8%) patients, thrombocytopenia (platelets < 1,00,000)
was found in 8 (3.3%) of patients. No patient required either
blood or platelet transfusion. Sub-acute thrombosis occurred
in 1 (0.04%) and death in 2(0.8%) patients. To conclude,
ischemic events were effectively reduced with bolus dose of
abciximab in high risk PCI and there were no major bleeding
complications.
antagonists were administered in 8 (26%) patients. All received
aspirin as well as clopidogrel following the procedure.
Immediate post-procedure results were excellent in all patients
without any complication. None of the patients developed
instent thrombosis. At a mean follow-up period of 6.8±3.5
months, there has been no instance of death/MI. One patient
who was symptomatic and had positive treadmill test (TMT),
underwent repeat coronary angiography which showed diffuse
instent restenosis. It was successfully treated with plain balloon
angioplasty. We conclude that angioplasty using very long
Pronova DES stent is safe with good outcome on mid-term
follow-up.
Predictors of Early Reinfarction after
Primary Angioplasty for ST-Segment
Elevation Myocardial Infarction
194
Niraj Gupta, Rajneesh Kapoor, Sanjeev Gera, Ramesh
Raikar, Gaurav Minocha, Aseem Dhall, Praveer Agarwal,
Atul Mathur, Suman Bhandari, TS Kler, RR Kasliwal
Results of Stenting using Very Long Pronova
Stents
193
Amresh Kumar, Umesh Agrawal, Naveen Garg,
Sudeep Kumar, Satyendra Tewari, Aditya Kapoor,
Significant reduction in instent restenosis and a need for
repeat interventions has been shown by randomized controlled
clinical trials of drug-eluting stents (DES). But data regarding
the DES > 30 mm length is limited. We report our initial
experience with very long (≥33 mm) Pronova stents. Between
June 2004 and June 2005, a total of 870 coronary stenting
procedures were performed, 31 patients belonged to this
category. Mean age of the patients was 54.9±10.3 years
(range: 41-68 years); 25 (80%) patients were males and 6
(20%) were females. Diabetes was present in 8 (26%),
hypertension in 4 (13%), and smoking in 8 (26%) patients.
The indications of angioplasty were chronic stable angina in
20 (64%), unstable angina in 8 (26%) and myocardial
infarction MI in 3 (10%) patients. Left anterior descending
(LAD) was stented in 20 (64%) cases, left circumflex (LCx) in
5 (16%), and right coronary artery (RCA) in 6 (20%) cases.
All lesions were pre-dilated and stents deployed at 12-14 atm
pressure with an attempt to cover the lesion from one normal
segment to another. The length of stent was 33 mm in 20
(64%) and 38 mm in 11 (36%) patients. The diameter of the
stents was 2.75 mm, 3 mm and 3.5 mm in 6 (20%), 10 (32%)
and 15 (48%) patients, respectively. The mean diameter of
stents used was 3.11±0.37 mm. Eight (26%) patients received
another stent in another vessel. Glycoprotein (Gp) IIb/IIIa
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Primary angioplasty with stenting is limited by significant
rate of recurrent infarction associated with increased
mortality. The aim of this study was to analyze predictors and
outcome of early reinfarction involving reperfused culprit
artery in patients undergoing successful primary angioplasty.
Between December 2000 to May 2005, 728 patients with ST
elevation myocardial infarction (STEMI) underwent primary
angioplasty at our institute. All clinical and angiographic data
was retrospectively analyzed. Patients were classified into
Group A who had reinfarction (n = 22) and Group B who did
not reinfarct (n = 706). Early reinfarction occurred in 22/728
(3.0%) patients with mean age of 61.5 years and male-female
ratio of 1.4:1. Among these 17 (77.2%) were diabetics, 15
(68.1%) were in advanced Killip class III/IV, 12 (54.5%) had
troponin-T levels >0.3 mg /ml. Angiographically 13 (59%)
had proximal left anterior descending (LAD) lesions as the
culprit infarct-related lesion, 8 (36.3%) were moderate to
heavily calcified arteries, 10 (45.4%) were small vessels (<3
mm), 7 (31.8%) were ectatic arteries and 11 (50%) had postprocedural mean myocardial blush grade of 1.8. In group A,
mean door-toballoon time, mean hospital stay and in-hospital
mortality were 7.4±1.8 hours, 6.4±2.1 days and 16/56
(28.5%) respectively in comparison to 5.1±0.7 hours, 3.4±1.2
days and 33/672 (4.9%), respectively in Group B. We conclude
that diabetes mellitus, advanced Killip class and high troponinT levels at presentation and angiographic features such as
proximal LAD culprit lesion, moderate to heavily calcified,
small and ectatic arteries and lower post-procedural
myocardial blush score along with delayed door-to-balloon
time are predictors of early reinfarction after primary
angioplasty. Early reinfarction is an independent predictor of
mortality.
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Incidence of Coronary Slow Flow in Major
Epicardial Vessel other than a Culprit Vessel
during Acute Myocardial Infarction
195
S Dhawan, A Mohanty, SC Manchanda, A Mehta,
R Passey, JPS Sawhney, RR Mantri, B Kandpal, R Jain,
R Mohan, S Sachdeva, VK Talwar, MK Jain, PK Khanna
The study was conducted in our hospital during the period
from January 1999 to January 2004. A total of 360 primary
angioplasties were performed. Incidence was found out based
on coronary slow flow in a vessel other than the culprit vessel.
Slow flow was defined as the corrected thrombolysis in
myocardial infarction (TIMI) frame count (CTFC) ≥ mean of
13 at a frame rate of 12.5/s, that is, more than 2 standard
deviations of mean CTFC (9.0±1.4) calculated for the 100
Indian patients with normal coronaries and normal flow (TIMI
grade III) performed at our laboratory. Out of 360 coronary
angiographies done immediately after acute myocardial
infarction, slow flow in a vessel other than the culprit vessel
was found in 80 (22.2%) patients. The cause of slow flow in
such scenario as such is unknown but it may be because of
endothelial dysfunction.
Percutanaeous Coronary Intervention in
Elderly
196
KM Jayadevan, CN Manjunath, B Ramesh, R Bingi,
ST Yagaval
Coronary artery disease is becoming an epidemic problem
in Indian sub-continent. However, with advances in medical
treatment many patients are living up to 8th or 9th decade. So
a significant number of patients coming for percutaneous
coronary intervention (PCI) constitute elderly patients. In the
year of 2004 to 2005, 980 patients had undergone PCI in our
institute. Of these, 71 (7.1%) patients were above 70 years –
55 (77.7%) males and 16 (22.5%) females. 40 (56%) patients
had unstable angina, 20 (28.1%) patients had chronic stable
angina, 8 (11.2%) patients had recent myocardial infarction
(MI) within 1 month and 3 (4.2%) patients had undergone
primary PCI. Hypertension was present in 40 (56%) patients,
16 (22%) patients were diabetic and smoking was present in
26 (36.6%) patients. Single vessel disease was present in 50
(70.4%) patients, 16 (22.5%) patients had double vessel
disease and 5 (7%) patients had triple vessel disease. 45
(63.3%) patients had undergone left anterior descending (LAD)
angioplasty, 8 (11.2%) patients right coronary artery (RCA)
angioplasty, 7 patients (9.8%) underwent left circumflex (LCx)
angioplasty, 7 (9.8%) patients - LAD and RCA angioplasty and
4 (5.6%) patients underwent LAD and LCx angioplasty. A total
of 92 stents were used and of these 30 (32.6%) were drugeluting stents. All lesions were predilated and all lesions were
stented. All patients received dual anti-platelet therapy. Sheaths
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were removed on the same day except in 3 patients. 45 (63.3%)
patients received unfractionated heparin (UFH) and 26
(36.6%) patients received low-molecular weight heparin
(LMWH). 3 (4.2%) patients received tirofiban. Mean ejection
fraction (EF) was 50%. One patient developed local hematoma
requiring blood transfusion; 1 patient had hematuria, 1 patient
had hemetemesis leading to temporary withdrawal of heparin
and aspirin and 1 patient died of cerebrovascular accident
(CVA). This patient was an 85-year-old female with multiple
cardiovascular risk factors. We conclude that PCI in elderly is
a safe procedure and age should not be a deterrent for PCI.
Single Operator Experience of Mini Vessel
Stenting in 107 Cases
197
VT Shah, Bharat Shivdasani, Sanjay Porwal,
V Kumarswamy, BR Nath, Samir Shah, Dinesh Sangwan,
Dhiren Shah
Jaslok Hospital and Metropolitan Heart Institute, Mumbai
Advances in stent design and strut thickness have made it
possible to introduce dedicated mini vessel stents (size ≤ 2.25
mm). Also, the need to tackle long lesions/diffuse disease has
made it necessary to introduce greater lengths (upto 33 mm)
in such mini vessel sizes, specially in the era of drug-eluting
stents (DES). Although no selective randomized trial in mini
vessel stenting is available, we present our real-world
experience of using such stents since 1st January 2003 to July
2005 in 107 cases (male 93 and females 14; age group 27–
78 years) in which 128 stents were deployed in native arteries
(111 stents of 2.25 mm and 17 stents of 2.0 mm). Risk factor
profile was - diabetes mellitus (DM): 43 (40.2%), hypertension
(HT): 37 (34.6%), high cholesterol (HC): 24 (22.4%), smoking:
19 (17.8%). Indication for angioplasty was stable angina (SA):
64 (50%) patients , unstable angina (UA)/ acute coronary
syndrome (ACS) : 56 (47.8%) patients, acute myocardial
infarction (MI): 8 (6.2%) patients. The lesion morphology was
Type A in 8 (6.2%) cases, Type B in 48 (37.5%) cases and
Type C in 72 (56.3 %) cases. The culprit vessel was left anterior
descending (LAD) 48 (37.5%), left circumflex (LCx) 29
(22.7%), obtuse marginal (OM) 14 (10.9%), right coronary
artery (RCA) 22 (17.2%), posterior descending artery (PDA) /
PLV 7 (5.5%), diagonal (Diag) 3 (2.3%), ramus intermedius
(RI) 5 (3.9%). The average length of the lesion was 20.07
±11.6 mm (8-33 mm). In 50 (46.7%) cases minivessel stents
were overlapped with bigger sizes to cover the proximal lesion
and one case to cover the distal dissection caused by a proximal
stent. The stents used were Pixel: 27, Minivision (Guidant):15,
Biodivysio 37, Dexamet: 9, Trimax (Abbott): 3, Micro Driver
(Medtronics): 10, Cypher (J & J), 18, Taxus (Boston): 9. Stent
delivery failed in 2 cases because of extreme tortuosity / diffuse
calcification. Direct stenting was done in 8 lesions and after
pre-dilation of 120 lesions. All patients received aspirin and
clopidogrel; besides 66 (62%) patients received glycoprotein
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(Gp) IIb/IIIa antagonist eptifibatide (integrilin) during periprocedure period. Till date major adverse cardiac events
(MACE) occurred in 12 (11.2 %) cases. There were 2 inhospital deaths, one in a case of anterior wall myocardial
infarction (AWMI) with cardiogenic shock and another in a
case of chronic renal failure with persistent chronic congestive
failure due to severe left ventricular (LV) dysfunction with triple
vessel disease (TVD). There were 2 cases of sub-acute
thrombosis treated conservatively by Gp IIb/IIIa antagonist.
Till date, symptomatic instent restenosis occurred in 8 patients,
7 non-DES and 1 DES (Taxus) out of which 2 underwent
coronary artery bypass grafting (CABG), 2 repeat
percutaneous coronary intervention (PCI) with DES and the
rest 4 were on medical management. We conclude that mini
vessel stent is comparatively safe, with good short/
intermediate-term results and can be used to cover long lesion/
diffuse disease distally for complete lesion coverage specially
in the DES era.
Outcome of Cobalt Chromium Stents in
Acute Coronary Syndrome Percutaneous
198
C Jayarama Reddy, M Ramanathan, G Venkatesh,
P Susheel Reddy, N Kannan, P Mahesh Babu,
KN Reddy, Y Vijayachandra Reddy
Vijaya Heart Foundation, Vijaya Hospital, Chennai
Cobalt chromium stents (CCS) and drug-eluting stents
(DES) have heralded a new era in stent technology. CCS achieve
good radial strength and good radio-opacity even with thin
strut resulting in significant reduction in restenosis and need
for repeat interventions compared to stainless steel stents.
While DES have been able to reduce restenosis rates, the hard
event rates - death /MI has remained the same or has increased
marginally, fuelling the controversy of suitability in highly
thrombotic situations. For these reasons, non-stainless steel
cobalt chromium stents are an excellent alternative in acute
coronary syndrome (ACS) percutaneous coronary
intervention (PCI). We present our experience with cobalt
chromium multi-link Vision and Minivision stents in the real
world scenario. From December 2003 to June 2005, 81 out
of 741 patients underwent PCI with cobalt chromium stents.
Overall 93 stents were used. The mean age was 54.9 years.
Age ranged from 31 years to 78 years. In the study population,
36% had diabetes mellitus, 42% had hypertension and 14%
had dyslipidemia. All had ACS; 49% had post-ST elevation
myocardial infarction (STEMI) angina, 26% had unstable
angina, 19% had non-STEMI (NSTEMI) and 6% had primary
PCI. The target lesion was de novo in all patients with single
vessel disease in 69 (85.2%) and double vessel disease in 12
(14.8%). The stent diameters used were 2.5 mm to 3.5 mm
(mean: 3.1 mm) and stent lengths were 12 to 28 mm (mean:
21.1 mm). Technical success was achieved in all the patients
(100%). Clinical follow-up data is available in all but 2 patients.
Angiographic follow-up is available in 10%. None of the
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patients had clinical events [myocardial infarction (MI)/death].
3 out of 79 patients had angina, 2 of them had instent
restenosis. 1 had patent stent with disease progression in
remote distal vessel which was treated with PCI. The absence
of hard events (MI / death) and remarkably low clinical
restenosis (2/79) in the highly complex clinical scenario of ACS
including the diabetic subset is extremely gratifying.
Drug-Eluting Stents in Primary Angioplasty
V Dedhia, B Shivdasani, S Shah, AB Mehta
199
Jaslok Hospital and Research Centre, Mumbai
We studied the clinical utility and outcome of drug-eluting
stents (DES) in primary angioplasty for patients with ST
elevation myocardial infarction (STEMI). The in-house and
short-term follow-up of 32 patients between January 2004 to
June 2005 was done of patients admitted and treated at our
hospital. The mean age was 55.5 years, with the youngest
patient aged 33 years and the oldest 78 years. There were 27
male patients and 5 female patients. The average time from
onset of symptoms to the onset of procedure was 60 min.
Seven (21.8%) patients had past history of hypertension, 9
(28.1%) had past history of diabetes and dyslipidemia; 2
(6.25%) patients had cardiogenic shock at the time of
presentation and required intra aortic balloon support during
and after the procedure. 17 (53.1%) patients were in Killip class
I, 13 (40.6%) patients in Killip class II and 2 (6.25%) patients
in Killip class IV at the time of procedure. Seven (53.1%)
patients had left ventricular ejection fraction (LVEF)>45%, 13
(40.6%) had LVEF ranging from 35-45%, and 2 (6.25%)
patients had severe LV dysfunction (VEF<25%) at the time of
admission. On angiography 10 (31.25%) patients had right
coronary artery (RCA) as the culprit artery, 2 (6.25%) had left
circumflex (LCx) involvement, majority 19 (59.3%) had left
anterior descending (LAD) involvement and 1 patient had both
LAD and LCx involvement. Significant thrombus burden was
seen in 28 (87.5%) patients on angiography. Abciximab was
used in 15 (46.8%) patients, eptifibatide in 8 (25%) patients.
EPI filter was used in 2 (6.25%) patients. Temporary pacing
was required in 1 patient. In 31 stents, size was 2.5 - 3.5 mm,
7 stents used were >3.5 mm in size and 2 stents were <2.5
mm. 24 stents were ≥ 20 mm in length and 16 stents were <
20 mm in length. Multiple stenting was done in 8 (25%)
patients. No post-procedural arrhythmias were seen. Also there
was no episode of acute or sub-acute stent closure. No reflow
was seen in 5 (15.6%) patients, which responded to treatment
with intracoronary nicorandil or auto perfusion. Two (6.25%)
patients were noted to have dissection on check angiogram
which were treated with overlapping stent. There was no postprocedural death or reinfarction. At one month clinical followup of 30 patients, 2 patients had NYHA class II dyspnea on
exertion, none had history of angina. We conclude that use
of DES in acute myocardial infarction is safe and has no
incidence of major clinical events at 30 days.
11/24/2005, 10:47 AM
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Angiographic and Clinical Outcome of Stent
Implantation for Long Coronary Artery
Lesions
200
S Shah, B Shivdasani, V Dedhia, AB Mehta
Percutaneous coronary intervention (PCI) in patients with
long segment coronary artery stenosis represents a difficult
subset as it is associated with increased risk for coronary artery
dissection, abrupt closure and higher restenosis rate. Between
January 2004 and December 2004, we studied 140 patients
in whom long stents (> 20 mm) were deployed. Of these, 117
(83.57%) were males. The average age was 59.9 years. There
were 59 (42.14%) patients with hypertension, 54 (38.57%)
with diabetes and 60 (42.86%) with dyslipidemia. 45
(32.14%) patients presented with stable angina, 91 (65%) with
unstable angina, 3 (2.14%) with acute myocardial infarction
(AMI), and 1 (0.71%) patient was asymptomatic. The lesions
were Type C and located in left main (LM) (0.6%), left anterior
descending (LAD) (40.37%), left circumflex (LCx) (16.77%),
right coronary artery (RCA) (33%), saphenovenous graft
(1.86%). Majority 124 (88.57%) patients had single vessel
disease, 13 (9.29%) had double vessel and 3 (2.14%) triple
vessel disease. The average lesion length was 25.12 mm. Of
the 161 lesions stented, 2 (1.2%) were bifurcating, 4 (2.4%)
were ostial, 10 (6.2%) were total occlusions, and 2 (1.2%) were
calcified requiring rotablation. 3 (2.14%) of these patients
underwent PAMI. Intra-aortic balloon pump (IABP) support
was required in 1 (0.71%) patient. Glycprotein (Gp) IIb/IIIa
inhibitors were used in 16 (11.4%) patients. Of the total 161
stents deployed, 106 (65.8%) were drug-eluting stents (DES)
with the average length being 27.29 mm and the average
diameter as 2.76 mm. For the 54 (34.2%) non-DES, the average
length was 26.62 mm and the average diameter was 2.86 mm.
Of the 161 stents deployed, 70 (43.48) were < 2.5 mm in
diameter (small vessel stenting). Overlapping stents were
deployed in 8 (4.97) lesions. Four (2.86%) of the 140 patients
had coronary artery dissection. Successful stenting was
achieved in all cases. None of the patients developed in-hospital
events in the form of MI, target lesion revascularization, or
death. In conclusion, elective stenting of long segment lesions
is feasible and has good immediate angiographic outcome.
Enoxaparin versus Unfractionated Heparin in
High Risk Patients of Non-ST Elevation Acute 201
Coronary Syndrome undergoing
S Lhila, J Naik, S Garg
Kolkata
In high risk patients of non-ST elevation acute coronary
syndrome (ACS), early percutaneous coronary intervention
B.p65
457
(PCI) has been an established therapeutic strategy. We
compared the outcome of these patients treated with
enoxaparin versus unfractionated heparin (UFH) with or
without glycoprotein (Gp) IIb/IIIa inhibitor who underwent
early percutaneous transluminal coronary angioplasty (PTCA)
and stenting. No differences in the incidences of ischemic
events like abrupt and threatened abrupt closure of the vessel
during and following PCI were seen (p=NS). There were no
significant differences in the incidence of major bleeding
episodes between the two groups. The incidence of minor
bleeding and complications like groin hematoma were
significantly less in the enoxaparin treated group as compared
to UFH (p=0.03). Moreover, enoxaparin therapy does not
require any monitoring of activated clotting time (ACT) or
activated partial thromboplastin time (APTT) as in case of UFH
recipient. We conclude that enoxaparin is a safe and effective
alternative to unfractionated heparin in patients undergoing
PCI without any increased risk of acute vessel closure.
Effect of Statin Therapy on Troponin-I in
Patients undergoing Percutaneous
202
SN Routray, CK Mishra, D Das, A Mishra,
HN Mishra, M Behera
Increased level of troponin-I is a sensitive and specific
marker of cardiac damage in patients undergoing
percutaneous coronary intervention (PCI). The aim of the
present study was to ascertain whether chronic statin therapy
can reduce cardiac damage after PCI. One hundred thirty-four
patients undergoing PCI because of presence of anginal
symptoms or evidence of inducible myocardial ischemia
comprised the study population. Seventy-four patients (Group
A) were on statin therapy for at least 6 months. Rest 60 patients
(Group B) were not on statin. Troponin-I levels were measured
6,12 and 24 hours after the procedure. Troponin-I was defined
positive if the blood levels exceeded 0.1 ng/dl. One-vessel PCI
was performed in all. Troponin values were elevated in 6 (8.1%)
of patients belonging to Group A and in 16 (26.6%) of patients
belonging to Group B. Multivariate analysis conformed the
relationship between statin therapy and the variation of
troponin levels after PCI (p=0.01). We conclude that patients,
not treated with statin before PCI, showed significantly more
frequent rise in troponin-I levels after the procedure. These
results suggest a possible protective role of statins against
myocardial damage during PCI.
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Effect of Tirofiban in Patients with High Risk
203
for Percutaneous Coronary Intervention:
Short- and Long-Term Follow-up
SN Routray, CK Mishra, C Satpathy, HN Mishra,
M Behera
The present era of antiplatelet therapy combines aspirin,
clopidogrel and glycoprotein (Gp) IIb/IIIa inhibitors to reduce
ischemic complications following percutaneous coronary
intervention (PCI). In this study a total number of 48 patients
with high risk features for PCI were administered tirofiban 2
hours before, during and 24 hours after PCI. There were 30
(62.5%) male patients with a mean age of 58±13.4 years and
18 (37.5%) females with a mean age of 54±12.8 years. The
patients were admitted within a mean period of 18±4.6 hours
of onset of chest pain and taken for PCI within 48 hours of
admission. All patients were administered injection tirofiban
with bolus dose of 25 mg/kg body weight over 3 min and
continued for 24 hours after PCI with a dose of 0.15 mg/kg/
min. On coronary angiogram, left anterior descending (LAD)
was found to be commonly affected (54.1%). All patients
underwent percutaneous transluminal coronary angioplasty
(PTCA) and stenting. The composite end point of death, nonfatal MI and ischemia was seen in 4 (8.4%), 5 (10.5%), 6
(12.6%) and 6 (12.6%) patients at the end of 7 days, 30 days,
6 months and 1 year respectively. Hemorrhagic stroke
occurred in 1 (2.1%) patient within 7 days. Minor bleeding
from femoral access site occurred in 4 (8.4%) patients within
30 days. Therefore, the major and minor bleeding within 30
days occured in 10.5%. Thrombocytopenia occurred in 1
(2.1%) patient at 6 months. Use of tirofiban in patients
undergoing high risk for PCI is definitely beneficial with slightly
higher incidence of bleeding complications.
Efficacy and Safety of Low Molecular Weight
Heparin during Transradial Percutaneous
204
F Panchal, A Ranjan, N Tanwar, S Gupta, R Pothiwala,
R Radadiya, H Malhotra, S Shah, T Patel
Transradial approach (TRA) has gained popularity in many
parts of the world and some of the Indian centers. Early
ambulation, reduced hospital stay and reduced vascular
complications are major advantages of this approach. Sheath
is removed immediately in all of our percutaneous coronary
interventions (PCI) in spite of intense anticoagulation. Low
molecular weight heparin (LMWH) is fast replacing
unfractionated heparin in cases where anticoagulation is
required due to convenient dosage, better bioavailability, and
reduced chances of bleeding. However, the experience with
LMWH is limited in PCI in Indian population. We prospectively
analyzed safety and efficacy of LMWH (enoxaparine) in
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transradial PCI. We studied 350 patients (male: 288, 82.3%)
with mean age of 52±12.3 years. Enoxaparine was given as 1
mg/kg intravenous as bolus; dose was decreased to 0.5 mg/kg
if glycoprotein (Gp) IIb/IIIa inhibitors were used during PCI.
Each patient was observed for bleeding complications and inhospital major adverse cardiac events (MACE). Early
ambulation was practised in all patients where clinical
condition permitted. The dose of enoxaparine was repeated
subcutaneously after 12 hours. The indication for PCI was
unstable angina in 181 (51.7%) of patients, acute myocardial
infarction (MI) in 57 (16.3%), prior MI in 76 (21.7%) and
chronic stable angina in 36 (10.3%) of patients. A total of 431
lesions were stented in 350 patients. The following arteries
were stented, left anterior descending artery [175 (40.6%)
lesions], left circumflex artery [136 (31.6%)] and right
coronary artery [120 (27.8 %)]. The lesion characteristics
were: 160 (37.6%) A Type; 126 (29.2%) B1 Type; 93 (21.6%)
B2 type; and 52 (11.6%) C type. Mean stent diameter was
3.22±0.57 mm (range: 2.25-4.5 mm), and mean stent length
was 19.2±7.5 mm (range: 8-38 mm). Single vessel PCI was
performed in 255 (72.8%) patients; double vessel in 57
(16.3%) and multivessel (>2 vessels) in 22 (6.3%) patients,
while in remaining 16 patients (4.6%) plain balloon
angioplasty was done. Abciximab was used in 50 (14.3%)
patients. No patient had any in-hospital MACE. No patient
had any major bleeding or cerberovascular event. Five patients
had small forearm hematoma. Procedural success was
achieved in 100% cases. Post-procedural TIMI III flow was
achieved in 346 (98.9%) patients. To conclude, LMWH is safe
and effective in transradial PCI. Immediate ambulation is
feasible where clinical conditions of patients permit.
Spectrum of Reinterventions in Patients
following an Index Percutaneous Coronary
Intervention
205
A Gopi, Yogesh Kothari, MR Sridevi
Sagar Apollo Hospital, Bangalore
With growing interventional experience, angioplasty with
stenting are being increasingly used as a primary modality of
treatment for patients with single and even multivessel disease.
More complex lesions and chronic occlusions are being treated
with this combination. This has led to increasing number of
patients presenting with restenosis for a repeat procedure. Also
as coronary artery disease (CAD) is a progressive disease, many
patients with new symptoms have new lesions or increase in
severity of milder lesions which might need treatment. At
our institute, we prospectively collected data on patients
undergoing a repeat interventional procedure from the period
of April 2004 till the present date. Twenty patients underwent
such a procedure of which 18 were male and 2 female with a
mean age of 54 years. Mean duration from the index
procedure was 35 months. Twenty-two lesions were treated;
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Indian Heart J 2005; 57: 426–461
10 were instent-restenosis 12 were new target lesion
revascularization. Twenty-one stents (16 drug-eluting) were
used and 3 patients underwent cutting balloon angioplasty.
There was one case of delayed subacute thrombosis. All lesions
were treated successfully with 100% angiographic success and
TIMI III flow. Eight (40%) patients were diabetic, 7 (35%) had
dyslipidemia, 4 (20%) were smokers and 12 (60%) were
hypertensive. Fifteen (75%) patients were on statins, all were
on aspirin and 16 (80%) were on clopidogrel. Hence, though
restenosis is an important consequence of intervention, it can
be easily tackled in present era by a repeat intervention. Also
significant proportion of patients may have new target lesions.
methotrexate arm as far as the secondary end points are
concerned. The MACE rates, binary restenosis rates and late
lumen loss in the BMS and oral methotrexate arm of our study
were lower compared to the BMS arm of our historical controls
and the BMS arm of major landmark trials comparing the BMS
with the DES. This probably reflects the beneficial effect of
methotrexate. Methotrexate may thus be a potent antirestenosis agent, specially if started prior to coronary stenting.
Drug-Eluting Stents versus Bare Metal Stents
and Oral Methotrexate for Coronary
Revascularization in Real World Lesions
Gaurav Minocha, Sanjay Chugh , Praveer Agarwal,
Vivek Tandon, Mitu Minocha, Rajneesh Kapoor,
Madhukar Shahi, Balbir Singh, Atul Mathur,
206
Samir Kubba, Harinder K Bali, Ajay Bahl,
SS Rana
Postgraduate Institute of Medical Education and Research,
Chandigarh
There is an ongoing search for potent oral drugs to prevent
restenosis after coronary stent implantation. Methotrexate is
an anti-proliferative agent which may reduce neointimal
proliferation and the rates of restenosis. We gave 7.5 mg of
methotrexate the night before the coronary angioplasty to
patients receiving bare metal stents (BMS) and continued it
weekly for 8 weeks. The efficacy of the BMS and methotrexate
arm of our study (Group 1) was compared with the drugeluting stent (DES) arm (Group 2) which included patients
receiving the Cypher and Taxus stents in real world situation;
29 patients received BMS and 30 received DES. The primary
end point was major adverse cardiac events (MACE) at 8
months [a composite of death, non-fatal myocardial infarction
(MI), target lesion revascularization (TLR), target vessel
revascularization (TVR)]. There were a total of 37 lesions in
the BMS (Group 1) and 33 lesions in the DES (Group 2). The
mean lesion length was 17.6 mm versus 18.4 mm in Group 1
versus group 2 (p=0.67). The overall MACE was 27.5% in
Group 1 versus 10% in Group 2, (p=0.09). Mortality rates were
0% versus 3.3%, (p=NS), MI 6.8% versus 3.3%, (p=0.57), TLR
17.2% versus 3.3%, (p=0.09), TVR 20.6% versus 3.3%,
(p=0.04) in group 1 versus group 2; 20 patients in each group
underwent follow-up angiography at 8 months or earlier if
indicated. The secondary end points (mean minimum lumen
diameter, % diameter stenosis and late lumen loss) were 1.8
mm versus 2.39 mm, (p=0.02); 40% versus 15%, (p=0.003);
0.91mm versus 0.3mm, (p=0.01) in Group 1 versus group 2.
The binary restenosis rates were 5/23 lesions (21.7%) in Group
1 versus 1/22 lesions (4.5%) in Group 2, (p=0.09). There was
a trend toward benefit of DES when compared to the BMS and
methotrexate arm of our study as far as the primary end point
is concerned though it did not reach statistical significance
(p=0.09). However, the DES scored over the BMS and
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Rotational Atherectomy with SirolimusEluting Stents in Calcific Lesions : Acute
Results and Long-Term Outcome
207
Large percutaneous coronary intervention (PCI) trials on
drug-eluting stents (DES) have excluded vessels with significant
calcification, diffuse disease and those requiring rotablation.
To the best of our knowledge, there is no data on rotablation
and sirolimus-eluting stents (SES) in moderate or severely
calcific lesions. This study aimed to look at acute results and
long-term follow-up in this subset of patients. We prospectively
studied 110 patients with moderate to severely calcific lesions,
who underwent rotablation followed by a Cypher SES (J&J,
Cordis) using standard procedures. All patients received aspirin
and clopidogrel for 1 year. Patients with acute myocardial
infarction (MI) <1 week, ongoing angina or ischemia, and
thrombus-containing lesions were excluded. A majority (52%)
of patients included had recent acute coronary syndrome
(ACS), 41% unstable angina (UA), 11% recent acute MI; 21%
had prior coronary artery bypass surgery (CABG); 45% were
diabetic. Mean left ventricular ejection fraction (LVEF) was
49.7 ± 10.5%. 142 sirolimus-eluting Cypher (J&J, Cordis)
stents were deployed in 110 patients (14% in 1 vessel, 32% in
2 vessels and 54% in 3 vessels) with 99% procedural success.
Final TIMI 3 flow was achieved in 98%. Mean stent length was
22.4 ± 9.3 mm (45% >20 mm). Mean stent diameter was 2.9
mm ± 0.2 mm (90%<3 mm). Glycoprotein (Gp) IIb/IIIa
inhibitor was used in 86%. Follow-up of 14.3±7.2 months was
available in 97%. Major adverse cardiac events (MACE)
occurred in 8%. Target vessel revascularization (TVR) was
required in-hospital in 0.9% and on follow-up in 3% (CABG in
1; repeat PCI in 2). Non-Q MI occurred in 11.8%. Death
occurred in 3.9% (n=4). Of these 1 each were non-cardiac and
heart failure related; 2 were sudden deaths (11 and 14 months
post-PCI). PCI of calcific vessels with rotational atherectomy
and SES was associated with a high procedural success and
low MACE in this largely diabetic population. Rota-stenting
with SES in diffuse calcific lesions needs to be studied further
in a larger population.
11/24/2005, 10:47 AM
Indian Heart J 2005; 57: 426–461
Early Invasive Approach in Elevation
Myocardial Infarction Following
Thrombolysis does not Resulted in Adverse
Outcome at 6 Months Followup.
208
DP Sinha,UK Saha, M Das, M Panja
Institute for Post Graduate Medical Medical Education and Research
and SSKM Hospitals, Kolkata
Primary percutaneous transluminal coronary angioplasty
(PTCA) is the recommended treatment modality for
revascularization following ST elevation myocardical
infarction (STEMI). However, primary PTCA is not always
feasible in most centers around the world. Routine invasive
approach few days after onset of symptoms is feasible in many
centers. Present study was designed with the aim to perform
complete revascularization in all patients of STEMI who
consented for it between 48 hours to 7 days of onset of
symptoms irrespective of whether thrombolysis were done or
not, and to see the outcome at 6 months. We studied 80
consecutive patients presented with STEMI at Fifty one patients
(Group-I) received thrombolysis with intravenous
streptokinase 1.5 million unit over 45 min and 29 patients
(Group-II) either did not qualify for it or had contraindications
for it. Other treatments were given as per recommendations.
Baseline parameters [electrocardiogram (ECG), fasting blood
sugar (FBS), creatinine, lipid profiles, CPK-MB] were recorded.
All patients underwent coronary angiogram (CAG) with plan
for complete revascularization between 48 hours to 7 days of
onset of symptoms. Group I: PTCA with stenting was
performed in 29 patients. Coronary anatomy was not suitable
for percutaneous coronary intervention (PCI) in 22 patients.
Group-II: PTCA with stenting was performed in 16 patients.
Coronary anatomy was not suitable for PCI in 13 patients.
Baseline parameters were comparable in both groups. Only
bare metal stents were used. Glycoprotein (Gp) IIb/IIIa blockers
(eptifibatide) were used in all patients. Periprocedural heparin
were used to achieve target ACT of 200 to 250 ms. All patients
were followed-up for 6 months. The end points of the study
were death, myocardial infarction (MI) or reinterventions for
recurrence of symptoms.
End points
Gr-I (n=29) Gr-II (n=16) p value
Reintervention 3
MI
1
Death
1 (CVA)
Total (%)
5 (17.2%)
2
1
0
3 (18.7%)
>0.5
<0.01
<0.001
>0.5
Significance
NS
S
S
NS
The study showed that early invasive approach for complete
revascularization few days after acute MI result in equal
outcome whether thrombolysis were done or not.
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Complete Heart Block after Occlusion of the
First Septal Perforator with Coronary
Stenting
209
Rachel Daniel, V Ramakrishna Pillai, NP Padmaja,
We report a case of transient complete heart block (CHB)
following occlusion of the first septal perforator (FSP) branch
after stent deployment in the left anterior descending (LAD)
coronary artery. The patient was treated with temporary
transvenous pacing and reverted spontaneously to sinus
rhythm. We postulate that the CHB in our patient is due to a
small localized infarct, related to the occlusion of the FSP. The
location of block is likely to be distal to the bundle of His, as
the escape rhythm had right bundle branch block (RBBB)
configuration. Restoration of sinus rhythm could be explained
by resolution of pathological changes in the infarct region or
perhaps by the restoration of blood flow into the FSP. Complete
heart block associated with non-Q wave infarction due to
occlusion of the FSP following proximal LAD stenting is rare
and interesting phenomenon with a relatively favorable
outcome. Conduction disturbances including CHB in this
setting may become more commonly recognized in future.
Low-Dose Epitifibatide in Percutaneous
Coronary Interventions
210
JS Bhuvaneswaran, G Rajendiran, C Vaidiyanathan,
Ramasamy, Tamilarasu
PSG Institute of Medical Sciences and Research, Coimbatore
Eptifibatide is one of the well accepted parenteral
glycoprotein (Gp) IIb/IIIa antagonist which is widely used in
percutaneous coronary interventions (PCI). In the current
percutaneous coronary interventions (PCI) era of routine use
of dual anti-platelet therapy and improved techniques,
prolonged infusion of (Gp) inhibitors may not be required. We
share our experience of usage of eptifibatide in a specific low
dose (180 µg/kg (bolus) plus 2 µg/kg/min as continuous
infusion for 10 to 12 hours instead of 20-24 hours as
recommended). From May 2001 till July 2003, 54 patients
underwent angioplasty with stenting in our center with this
protocol. The distribution of patients was 47 (87%) males and
7 (13%) females. The procedure was done electively in 18
(33%) and as ad hoc in 36 (67%), amongst which 48 (89%)
had single stenting and 6 (11%) had two stents. The
distribution of disease in the coronary arteries was; left anterior
descending (LAD) 31 (57%), right coronary artery (RCA) 3
(6%), left circumflex (LCx) 6 (11%). More than one vessel lesion
was present in 14 (26%) patients. Peri -procedural events and
in-hospital mortality were analyzed and significant morbidity
and mortality was found only in two (3.7%) of the cases. Our
experience using this low-dose protocol with a very good
outcome should prove to be useful in our cost conscious society.
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Indian Heart J 2005; 57: 426–461
211
through Transradial Approach
Percutaneous coronary intervention (PCI) for acute
myocardial infarction (MI) is superior alternative to
thrombolytic therapy. Primary PCI through transradial
approach is preferable because of zero vascular complication
rate. As a protocol all primary percutaneous transluminal
coronary angioplasty (PTCA) is performed through transradial
route at our unit. We retrospectively analyzed 30 cases of
primary PCI performed during January 2003 to July 2004.
Twenty-seven (90%) patients underwent PCI through radial
route. The procedure was performed from femoral approach
in 3 (10%) patients because of cardiogenic shock. Culprit lesion
was in left anterior descending (LAD) in 12 (44%) patients,
left circumflex (LCx) in 5 (18%) and right coronary artery
(RCA) in 10 (37%) patients. The mean door to stent time was
34±12 min. Direct stenting was done in 22 (82%) patients.
24 patients (88%) received glycoprotein (Gp) IIb/IIIa receptor
blockers. None of the patients had major bleeding
complications. Forearm hematoma was observed in 3 (12%)
patients who received (Gp) IIb/IIIa receptor blockers, and in
one patient we needed to discontinue the infusion. All culprit
lesions were successfully opened. In two patients with
persistent shock non-infarct-related artery was also opened.
Cardiogenic shock was present in 5 (18%) patients, in whom
intra-aortic balloon pump (IABP) was inserted. In conclusion,
transradial route is a safe route in primary PTCA because of
low vascular complications. With experience, this procedure
can be performed as rapidly as from the femoral approach.
documented. There were 112 elective PCI and 4 for STEMI.
An initial success with thrombolysis in myocardial infarction
(TIMI) grade III flow was achieved in 109 patients (93.97%).
Two (1.71%) patients had suboptimal results because of diffuse
distal disease of the target artery. One of them was taken for
rescue angioplasty (after failed thrombolysis). He was in
pulmonary edema and died 3 hours later. The procedure had
to be abondoned in five (4.31%) patients as the target lesion
could not be crossed. One of these patients had acute
myocardial infarction, and was successfully thrombolyzed. A
few patients had minor complications like puncture site
hematoma, and bleed, not requiring blood transfusion or
peripheral vascular intervention. None of the patients required
emergency coronary artery bypass graft (CABG) surgery. This
study demonstrates that PCI can be performed in a selected
group of patients with safety and efficacy in a hospital without
on-site cardiac surgical facilities. None of our patients required
to be referred for emergency CABG surgery.
Our Experience with Sirolimus Eluting
Indian Stent (Supralimus) in First
133 Patients
213
KN Reddy, KA Abraham, K Chandrasekaran,
CG Sreenivas, M Vijayakumar, AL Narayanan,
S Shanmugasundaram, V Umapathy, C Jayarama Reddy,
G Venkatesh, M Ramanathan
without On-Site Cardiac Surgery in United
Arab Emirates
212
AS Binbrek, SK Agarwal, Haitham Al-Hashimi
Rashid Hospital, Dubai, UAE
The aim of the present study was to assess the feasibility,
efficacy, and safety of percutaneous coronary intervention
(PCI) in patients with stable coronary artery disease (CAD),
acute coronary syndrome (ACS) and ST segment elevation
myocardial infarction (STEMI) in a Gulf area hospital without
on-site cardiac surgical facilities. We reviewed the data of a
total of 116 patients who underwent PCI between November
2003 and October 2004 in our hospital. Surgical standby
arrangements were agreed upon with a nearby centre. Periprocedural and immediate pre-discharge outcomes were
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Drug-eluting stents (DES) have remarkably changed the
perspective of percutaneous coronary intervention (PCI). It
has shown a significant reduction in restenosis and need for
repeat interventions. We present our experience with
Supralimus in the real world patients. From April 2004 to June
2005, we have treated 133 patients with 146 stents. The mean
age was 54 years. Age range was from 36 years to 72 years. In
the study population, diabetes mellitus present was in 38%,
hypertension in 40%, post-myocardial infarction- 36%,
unstable angina/NSTEMI in 19%, dyslipidemia in 12%. The
target lesion was de novo in all patients with single vessel
disease: 105 (78%), double vessel disease: 26 (19%). The stent
diameter used was 2.5 mm-4.0 mm (3.0 mm-43.53%) and
stent length was 11-33 mm (19 mm-31.97%). Technical
success was achieved in 126 (95.30%) patients. In 7 (4.7%)
patients, lesion could not be crossed because of complex
anatomy. Clinical follow-up data is available in 95.5%. One
patient died of non-cardiac cause (0.75%). Twenty-seven
patients completed 9 months follow-up and their angiographic
follow-up data will be presented. The result in both diabetic
and non-diabetic patients is gratifying and deserves further
evaluation.
11/24/2005, 10:47 AM
Indian Heart J 2005; 57: 462–467
462 Rheumatic and Valvular Heart Disease
Pregnancy in Women with Mechanical Heart
214
Valves - The Anticoagulation Dilemma
Thrombolytic Therapy for Prosthetic Mitral
Valve Thrombosis
Vijaya Bharat, Renu Sinha, NK Das, SB Basu
Prabhakar C Koregol, B Sreenivasa, AU Mahajan
Tata Main Hospital, Jamshedpur
Mumbai
As the long-term survival of patients with mechanical heart
valves (MHV) is steadily improving, there is a growing
expectation to lead normal family life. However, pregnancy in
women with MHVs continues to be a "very high risk" situation
and there is no consensus on the safest, most effective and
practical regimens of anticoagulation. We analyzed the
outcome of 18 pregnancies in 14 women treated in our
hospital, from 1993. There were two groups. In Group 1 the
outcome was full-term deliveries and Group 2 had the
miscarriages. All the patients in Group 1 (n=8), except one
were taking oral anticoagulants (OAC) throughout the 1st and
2nd trimesters. There were 5 mitral, 2 aortic and 1 aortic root
prosthesis. One patient with Starr-Edwards prosthesis in mitral
position was taking only aspirin from the time of valve
replacement in 1988. In the rest, the maximum dose of OAC
was warfarin 5 mg or nicuomalone 3 mg per day. The INR
values ranged from 1.5 to 3.0. There were no congenital
anomalies in the live born babies. Despite 3 different regimens
of anticoagulation before delivery, intravenous heparin (n=3),
subcutaneous heparin (n=2) or OAC till day 3 before delivery
(n=2), there were no thromobotic or major bleeding
complications. Labor was induced in all the 8 patients by
prostaglandin gel and/or artificial rupture of membrane. There
were 2 ceserean sections, 2 forceps and 4 normal deliveries.
One baby with hyperbilirubinamia required exchange
transfusion. In Group 2 there were 6 women, 3 with mitral
prostheses and 3 with MHVs in both mitral and aortic sites.
Three miscarriages occured in 1st trimester and 1 patient had
medical termination. Two miscarriages in 2nd trimester
occured in a patient with Rh negative blood group. Since
autopsy studies of the fetuses were not conducted, the cause
of abortions could not be ascertained. The text book
recommendation of IV heparin from 6 to 12 weeks of
pregnancy and in the last 2 weeks is seldom practised. Several
studies have shown that warfarin embryopathy is an overstated
complication and the ease of preventing prosthestic valve
thrombus with OAC outweighs the cost and inconvenience
associated with optimum heparin therapy. Even though there
was no congenital anomaly in our series, the use of OAC is
prohibited during early pregnancy and so there is a dilemma
in recommendation. Before term, IV heparin guided by
activated prothrombin time (APTT) monitoring offers the best
protection for safe delivery. Since large controlled trials cannot
be conducted in any single center for pregnancy in women with
mechanical heart valves, pooling of data will help to identify
the safest regimen for anticoagulation, suitable for our country.
C.p65
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215
Prosthetic valve thrombosis (PVT) is major and serious
hazard to patient with prosthetic valves. Thrombolytic therapy
for PVT has emerged as an acceptable alternative to surgery
but its success and complication rate are still controversial.
We had 15 patients treated by thrombolytic therapy for PVT
of mitral valve, with streptokinase. Serial (usually at 6 hourly,
at least 24 hourly) echo-Doppler parameters, transvalvular
gradients and valve area were measured in all patients. All
patients had TTK Chitra valve. The time since valve
replacement varied from 4 months to 9 years (mean 33
months). Six (31.57%) patients died during thrombolytic
therapy, 5 of them due to progressive cardiogenic shock and
one possibly due to bleeding complications. All deaths occurred
during 1st 24 hours after admission. The 13 survivors had
complete resolution of thrombus, normalization/significant
fall in gradients and symptomatic improvement. No
statistically significant correlation was noted in relation to
missed oral anticoagulants and international normalized ratio
(INR) was in therapeutic range in 14/19 (73%) patients. Our
study suggests that PVT can occur in presence of adequate
anticoagulation and is associated with significant mortality
despite thrombolysis. There is possibility of varied response to
streptokinase in view of previous streptococcal infection which
suggests the need for evaluation of other thrombolytic agents.
Use of Alternative Drugs for Rheumatic Fever
Prophylaxis in Place of Injection Benzathine 216
Penicillin
A Lalchandani, M Shameem, S Chandra, P Sondhi,
A Agarwal, V Agarwal, P Neelam, G Preethi, U Pandey
While there is no doubt that injection penicillin for chronic
prophylaxis of rheumatic fever is time-tested, the nonavailability of injection, poor compliance and increasing
reluctance of general practitioner to give penicillin injection
for fear of anaphylaxis have made us think of other suitable
alternatives. Both admitted and out-patients of our Institute,
both newly diagnosed and those already taking prophylaxis
were included in the study. Among 100 patients selected, 50
were given injection benzathine penicillin and 50 were given
cefadroxil 1000 mg daily for 2 years. About 40% of those
taking penicillin missed their doses compared to 30% in the
cefadroxil group; 12% of the patients did not turn up during
follow-up compared to 6% in cefadroxil group. One patient
developed recurrence of rheumatic fever in cefadroxil group.
Among the causes of non-compliance in penicillin group were
non-availability of the drug (78%), fear of injection (55%),
11/24/2005, 10:50 AM
Indian Heart J 2005; 57: 462–467
Rheumatic and Valvular Heart Disease 463
pain (50%), and non-availability of doctors/centre for
administration of injection. In the cefadroxil group causes of
non-compliance were cost of therapy (65%), lack of motivation
(40%), side effects (7%) and non-availability of the drug in
some villages. Even though one case of rheumatic fever
occurred in the cefadroxil group, the compliance was better,
and side-effects were minimal compared to injection penicillin.
The prohibitive factor was cost of therapy. In an ongoing study
by the same authors, the use of azithromycin 500 mg, 3 days
a week is proving to be sufficient to prevent new attacks of
rheumatic fever.
Penicillin Prophylaxis in Rheumatic Fever:
A Dismal Performance
217
I Mammen, S Sreenivasan, H Bajaj, C Lanjewar,
King Edward Memorial Hospital, Mumbai
Penicillin prophylaxis, prescribed as three weekly
benzathine penicillin injection, prevents recurrence of
rheumatic fever. We reviewed the nature of compliance
regarding penicillin prophylaxis amongst patients attending
our outpatient clinic. Records of patients attending our
cardiology outpatient department for receiving injection
benzathine penicillin for preventing recurrence of rheumatic
fever are meticulously maintained. Records of last years were
analyzed retrospectively to assess the compliance over the last
two years. Of the 1826 patients who attended our outpatient
department for taking benzathine penicillin injections, 35.5%
(n=640) had taken only ≤ 25% of the scheduled injections;
24.97% (n=456) had taken 25-50% of the injections, while
28.15% (n=514) had taken 50-75% of the injections and
11.82 % (n=216) had taken more than 75% of the injections.
Only 1.97% (n=36) of the study population were found to be
100% compliant. Compliance with penicillin prophylaxis was
extremely poor in our population. This is likely related to
unwillingness on the part of primary care physicians to give
penicillin injections in setting of clinic, distance a patient lives
from the tertiary care center, cost and difficulty of travelling
to the tertiary center and poor educational status. More
aggressive measures need to be taken to ensure that penicillin
prophylaxis is taken regularly.
A Paradigm Shift in Diagnosis of RF:
A Review of 200 Patients of RF with a view
to Scrap Jones Criteria
218
A Lalchandani, M Shameem, P Sondhi, A Agarwal,
V Agarwal, P Neelam, G Preethi, U Pandey
Jones criteria has been applied for diagnosis of rheumatic
fever unquestioned for many years, though many of them are
C.p65
463
irrelevant in Indian context where rheumatic fever occurs the
most. Two hundred patients of rheumatic fever presenting
with carditis were taken for study from outpatient department
or those admitted in our institute. They were analyzed with
regard to Jones Criteria. Among the 200 patients of acute
rheumatic carditis, arthritis was present in 40 (20%) patients
simultaneously, and 130 (65%) patients mentioned at least one
episode in past. No patient had chorea, erythema marginatum
and subcutaneous nodules. Among minor criteria, arthralgia
(85%) was most common followed by fever (82%) and
increased PR interval in electrocardiogram (ECG) (70%).
Among essential criteria, raised Amplastzer septal occulator
(ASO) titre was seen in 185 patients and culture was positive
in 20 patients. In our study of patients of rheumatic fever, no
patient had even one of the 3 major criteria such as chorea,
erythema marginatum and subcutaneous nodules, and
among 200 patients of rheumatic fever, arthritis was present
in 20% patients simultaneously and 65% patients had at least
one episode earlier. These findings force us to think that
subcutaneous nodules and erythema marginatum may be a
coincidental finding in rheumatic fever. As for Syndenham's
choreas, since the ASO titre is known to be normal and also,
in these patients there is no other evidence of rheumatic fever,
this symptom should be regarded as a separate disease entity,
best called Syndenham's chorea and not rheumatic fever at
all.
Rheumatic Mitral Stenosis with Left Atrial
Appendage Thrombus - Does Thrombus
Really Resolve ?
219
C Elangovan, V Jaganathan, R Alagesan,
M Annamalai, S Shanmugasundaram,
Geetha Subramaniyam, A Balaguru, G Anuradha,
G Gnanavelu, S Venkatesan,G Karthikeyan,
G Justin Paul, C Moorthy
Left atrial (LA) thrombus formation remains a significant
problem causing morbidity and mortality in rheumatic mitral
stenosis. Medical treatment for it still remains unclear. We
studied effect of oral anticoagulation on LA thrombus
resolution. We analyzed 25 patients (16 female, 9 male) with
severe rheumatic mitral stenosis aged between 22 to 42 years
(mean: 35 years) who had definite evidence of LA appendage
thrombus by transesophageal echocardiography (TEE) with
complete echocardiographic [transthoracic echocardiography
(TTE) and TEE] and clinical data. Patients with NYHA class
IV, LA body thrombus, and those with significant other valve
lesions were excluded. 20 patients were in atrial fibrillation
(AF) (including 3 patients in intermittent AF) and 5 patients
in sinus rhythm during study. Mean mitral valve area, peak
gradient, mean gradient were 0.62, 24.65 mmHg, 15.4
mmHg respectively. Mean Wilkins score was 7.3. Mean LA
volume and LA appendage area were 151.05 cm3 and 5.32
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Indian Heart J 2005; 57: 462–467
cm2, respectively. LA appendage emptying velocity ranged
between10-40 cm/s with mean of 11.5 cm/s in those with AF
and 39 cm/s in those in sinus rhythm. LA appendage clot size
varied between 1.29×0.96 cm to 4.7×2.1 cm. All patients
showed evidence of LA-spontaneous echocardiographic
contrast. All patients received oral anticoagulation and INR
was maintained between 2-3 and followed-up. Repeat TEE
assessment was done after 6 weeks of anticoagulation. Four
Age (years)
<30 (6)
Resolution, % (2)
33.3
>30% size
(2)
reduction, % 33.3
No/minimal (2)
Change, % 33.3
(16 %) patients had complete resolution of LA appendage
thrombus and four (16%) patients showed reduction (>30%)
in thrombus size. In our study, 16% of patients showed
thrombus resolution and another 16% showed reduction in
size. Factors associated with resolution or reduction in size
include younger age, small clot size, sinus rhythm, intermittent
AF and LA appendage emptying velocity more than 30 cm/s.
Rhythm
30-40 (15) >40 (4)
AF (17)
AF-I (3) SR (5)
Clot sze
(major dimension)
<1.5cm (10)
>1.5 cm (15)
(2)
13.3
(2)
13.3
(11)
73.3
(1)
5.8
(1)
5.8
(15)
88
(1)
33.3
(1)
33.3
(1)
33.3
(4)
40
(2)
20
(4)
40
(0)
0
(0)
0
(4)
100
(2)
40
(2)
40
(1)
20
(0)
0
(2)
13.3
(13)
88.7
LAA emptying
velocity
<30 cm/s (19) >30 cm/s (6)
(0)
0
(2)
10
(17)
90
(4)
66.6
(2)
33.4
(0)
0
( ): number of patients; AF-I: atrial fibrillation intermittent; SR: sinus rhythm; AF: atrial fibrillation
Predictors of Morbidity in
Mechanical Prosthetic Heart Valves
220
SV Praveen, Vikram Sankar, Mohammed Fassaludeen,
N Jayaprasad, TN Sunil Roy, Babu Vasudev,
Johnson Francis, CG Sajeev, Syam Kumar, K Venugopal
Patients on mechanical heart valve prosthesis have
significant mortality and morbidity. The aim of this study was
to find out morbidity patterns and predictors of morbid events
in patients attending the prosthetic valve clinic of a tertiary
care center. Consecutive patients (n=83, males: 39, females:
44) with mechanical prosthetic heart valves attending the
prosthetic valve clinic were enrolled in the study. The mean
age of patients was 37.6±12 years. There were 62 patients
with mitral prosthesis, 11 with aortic, 8 with both and 2 with
mitral, tricuspid and aortic prosthesis. The majority of mitral
prosthesis were Starr Edwards, size varied from 18-40 mm.
Six had St Jude prosthesis and 9 had TTK Chitra valves. The
duration of follow-up varied from 3 months to 22 years with
a mean of 4.78±5.3 years. The majority had rheumatic heart
disease as the indication for valve replacement. All the patients
were on oral anticoagulation; 35 (41%) patients in the study
group had one or more morbid events. Major bleeding
manifestations occurred in 4 persons and minor bleeds in 28.
Prosthetic valve thrombosis occurred in 3 persons with St Jude
prosthesis in mitral position. Strokes occurred in 12; 3 major
and 9 TIAs. Peripheral embolism to femoral artery in 1 person
was treated by embolectomy. Late prosthetic valve endocarditis
occurred in 2 and dehiscence in 1 person was treated by
reoperation. Prothrombin time monitoring was irregular in
25% of patients. Univariate and multivariate regression
analysis were done for predictors of morbidity. On univariate
analysis, inadequate anticoagulation and the number of years
of follow-up were the only predictors of morbid events. On
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464
multivariate analysis number of years of follow-up was found
to have significant correlation with minor bleeding episodes.
To conclude, patients with mechanical heart valves have
significant morbidity. Morbidity increases over years of followup and inadequate anticoagulation is associated with
increased risk of stroke.
Thrombolytic Therapy for Left-sided
Prosthetic Valve Thrombosis
221
Mitu A Minocha, Ashok K Omar, Gaurav Minocha,
Pramod Soni, Harish Sanadhya, Nishith Chandra,
RR Kasliwal, Naresh Trehan
Thrombosis of left-sided prosthetic heart valves is an
uncommon yet potentially serious complication. Thrombolytic
therapy has been proposed as an alternative to surgical
methods in treating this condition. Between January 2000 to
March 2005, 53 patients presented to our institute with
prosthetic valve thrombosis. Of these, 50 patients (56.6%
males, mean age: 47.4±27 years) were treated with
intravenous (IV) thrombolytic therapy under serial
echocardiographic guidance. Twenty patients had mitral valve
and 30 patients had aortic valve thrombosis; 56% patients
were in NYHA functional class II and 40% patients were in
class III. Inadequate anticoagulation was recognised in 96%
of patients. The time interval between valve replacement and
thrombosis ranged from 2 months to 192 months (mean
30.1±28 months). Streptokinase was used in 45 patients and
urokinase in 5 patients. The mean duration of thrombolytic
therapy was 9.8 ± 8 hours. Success was achieved in 90%
patients. One patient died during thrombolytic therapy due to
intractable bleed and 1 died due to persistent heart failure. Redo
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Indian Heart J 2005; 57: 462–467
valve replacement was done in 3 patients as they did not
improve with thrombolytic therapy. Inadequate
anticoagulation was a predominant cause of prosthetic valve
thrombosis in our study. Successful thrombolysis was achieved
at low risk of complications with intravenous thrombolytic
therapy for both mitral and aortic valve thrombosis and in all
types of prosthesis. Hence we recommend thrombolytic
therapy as a safe and effective non-surgical method for
treatment for prosthetic valve thrombosis.
Echocardiographic Evaluation of Prosthetic
Valve Thrombosis before and after
Thrombolysis
of Pakistan. Recent data from Pakistan has confirmed no
decline in prevalence of RHD over past three decades. Lack of
effective preventive measures at national level is the main
underlying factor for rising trends in the incidence of
rheumatic fever (RF)/RHD in Pakistan. In the current scenario,
there is no structured prophylactic programme in the health
care system. Extrapolating the results of a recently published
study HEART (the first reliable population-based study of a
representative sample- rural Pakistan) there would be huge
number of RHD patients in Pakistan in future. The developing
countries of South Asia should design a common strategy
sharing technical and research resources in collaboration with
international organizations, to combat this crippling disease
leading to enormous disability.
222
SN Routray, CK Mishra, C Satpathy, A Mishra,
HN Mishra, M Behera
Contractile Reserve in Patients with
Rheumatic Mitral Stenosis
JC Mohan, LR Nath
Thrombolytic therapy has emerged as an alternative to
surgery for prosthetic valve thrombosis (PVT). The objective
of the present study was to analyze results of thrombolytic
therapy in patients with left sided PVT. From 1990 to 2004,
67 consecutive patients with left - sided PVT were treated with
streptokinase. Serial echocardiographic examinations were
done before and after thrombolytic therapy to assess resolution
of thrombus. Complete resolution of the hemodynamic
abnormalities was seen in 51 out of 67 (76.1%) patients,
partial resolution in 7/67 (10.4%) and failure in 9/67 (13.4%)
patients. Six (8.9%) patients died during infusion of
streptokinase because of hemorrhage. Altogether there were
11 (16.4%) cases of haemorrhage. Embolic episodes occurred
in 9 (13.4%) patients. We conclude that thrombolytic therapy
is effective in majority of cases of left-sided PVT. However it
can give rise to complications like major bleeding episodes and
embolization.
Metro Golden Heart Institute, New Delhi
Contractile reserve (CR) may be an important issue in
patients with rheumatic mitral stenosis (MS) who either
present in cardiogenic shock or may have left ventricular (LV)
systolic dysfunction either per se or secondary to chronic atrial
fibrillation. We sought to characterize the quantum and
frequency of contractile reserve in consecutive symptomatic
patients with significant rheumatic MS in sinus rhythm by
dobutamine infusion in incremental steps of 5 µg/kg/min upto
a maximum of 20 µg/kg/min. Fifty-seven consecutive patients
with symptomatic MS (mean mitral valve area 1.24±0.36 cm2)
aged 29±7 years and having normal or mild LV systolic
dysfunction (fractional shortening 30±6%) were studied by
2- dimensional echocardiography and Doppler examination
at baseline and during dobutamine infusion up to a maximum
dose of 20 µg/kg/min. Contractile reserve was defined as an
increase in stroke distance ≥20% compared to baseline. The
table shows the detailed parameters of contractile reserve.
Parameter
Basal
Peak dose
Stroke distance (cm)
18.5±4.1
19.1±4.4
NS
Stroke volume (ml)
60.2±23
62.8±24
NS
Heart rate (bpm)
Rheumatic Heart Disease in Pakistan- Past,
Present and Future
223
Syed Faiz Ul Hassan Rizvi
Sheikh Zayed Medical College, Rahimyar Khan, Pakistan
Rheumatic heart disease (RHD) is one of the leading causes
of cardiovascular morbidity and mortality in the subcontinent
C.p65
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224
p value
77±14
117±24
<0.001
Cardiac output (L/min)
4.0±0.96
5.6±1.22
<0.001
Diastolic flow rate (ml/s)
117±5
159±5
<0.001
Fraction shortening (%)
30±6
38±7
<0.001
Despite significant inotropic and chronotropic effects of
dobutamine, contractile reserve was demonstrable only in 11
(20%) cases. Most patients (80%) with mitral stenosis show
insignificant contractile reserve due to pre-load insufficienty.
This observation has significant implications in patients with
mitral stenosis who present in low output state.
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Indian Heart J 2005; 57: 462–467
A Comparison of Steroids and NSAIDs in
Rheumatic Carditis with regard to Cost,
Efficacy, Side-Effects, Safety Profile and
Compliance
225
A Lalchandani, M Shameem, R Chandra, SK Saxena,
S Chandra, P Sondhi, A Agarwal, V Agarwal
36 years old which stresses the importance of continuing antirheumatic fever prophylaxis for several years in a child with
the disease.
Normal Gradients in Mechanical Aortic and
Mitral Prosthesis
This study was conducted to compare the effects of steroids
with that of aspirin and nimesulide in rheumatic carditis. Two
hundred patients of rheumatic carditis were divided into 3
groups. Group I was treated with prednisolone 1-2 mg/kg daily
(n=25), Group II was treated with aspirin 100 mg/kg daily
(n=100) and Group III was treated with nimesulide 400 mg/
day in 2 doses (n=75). Mean duration of resolution of Creactive protein (CRP) level after treatment was 11±2.1 days,
15±1.95 days and 15.2±1.1 days, respectively in Group I, II
and III. Among all groups, side effects were most common in
aspirin group i.e. 55% followed by steroid group (40%) and
nimesulide group having least incidence (6%). Five patients
could not tolerate the drug in the aspirin group, compared to
none in other groups. Average cost of therapy for steroid was
Rs. 315 (6 weeks), aspirin Rs. 900 (6 weeks), nimesulide
Rs. 120 (2 weeks). Rebound did not occur in nimesulide group
even after abrupt stoppage after 2 weeks only. It is concluded
that nimesulide in doses of 200 mg twice daily has equally
good response in terms of relief of symptoms and retun of
acute phase reactants to normal. Side effects were minimal
compared to aspirin and steroids. Cost of therapy is cheaper
as the course is short. Compliance is better in nimesulide group.
There is no rebound in nimesulide compared to aspirin and
steroids even after abrupt withdrawal.
227
SV Praveen, Vikram Sankar, N Jayaprasad, V Mubarak,
Mohammed Fassaludeen, Sunil Roy, Johnson Francis,
CG Sajeev, K Venugopal
Prosthetic valves (PV) even when they function normally,
are associated with some gradient across it. Doppler assessment
of prosthetic valve function, thus, requires specification of
valve type and size, and knowledge of the normal values. The
aim of this study was to assess the normal gradient across
different types of mechanical prosthesis. Doppler
echocardiographic analyses of the gradients across mitral and
aortic prosthesis of consecutive patients (n=75) attending
prosthetic valve clinic were analyzed. All patients who had
symptoms of prosthetic valve dysfunction were excluded from
the analysis. Mean mitral gradients were 5.62±22 mmHg
(range: 2-12 mmHg). The mean and peak gradients across the
mitral prosthesis as per valve type are shown in the table.
Type
Starr Edwards (n=52)
St Jude (n=6)
TTK Chitra (n=9)
Mean gradient
(mmHg)
6± 2.2
4.2±2.3
4.14±1.4
Peak gradient
(mmHg)
13.8±5.4
8.8±2.2
8.9±3.3
The mean and peak gradients for the prosthesis at the aortic
position are shown in the Table. Mean gradient was 14.7±6.4
mmHg and peak gradient was 26.3 ±10.3 mmHg.
Age and Sex Distribution of Rheumatic
Carditis
226
A Lalchandani, M Shameem, S Chandra, P Sondhi,
A Agarwal, V Agarwal, P Neelam
Type
Mean gradient
(mmHG)
Peak gradient
(mmHG)
Starr Edwards (n=2)
St Jude (n=5)
TTK Chitra (n=7)
19.5± 2.1
13.6±5.7
16±8.4
35.5±7.8
24.2±8.5
28.3±14
This is the report of a study of age and sex distribution of
200 patients of rheumatic carditis. Two hundred patients of
rheumatic carditis were selected from patients attending our
hospital. Out of 200 patients taken for study, maximum
number of patients were in under 15 years age group (n=91)
followed by 69 patients in 15-30 years age group, followed by
41 patients > 30 year age group. Youngest and eldest patients
were 12 years and 36 years of age, respectively. In our study,
93 patients were males and 107 patient were females. Most of
the patients were <15 years (45.5%) age group followed by
15-30 years age group (34.5%) and > 30 years (20.5%) age
group. Male- female ratio was 0.86:1. The eldest patient was
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On univariate linear regression analysis significant correlation
was noted between the mean and peak mitral gradients and
the type of mitral mechanical prosthesis (p=0.2 and 0.01,
respectively). On multivariate analysis, peak gradient was
correlated with type of prosthesis (p=0.4). Aortic mean and
peak gradients correlated significantly with the size of
prosthesis (p=0.0006 and 0.0001, respectively). Multivariate
linear regression showed that the only correlate of the aortic
gradients was size of the prosthesis. Thus, it is concluded that
in normal functioning mechanical prosthesis, type of valve was
associated with the different gradients but at the aortic position
size of the valve was more important than type of the valve.
11/24/2005, 10:50 AM
Indian Heart J 2005; 57: 462–467
Atrial Fibrillation in Rheumatic Heart
Disease
228
AKP Singh, UK Ojha, Chandan
Patliputra Medical College, Dhanbad
Atrial fibrillation (AF) is associated with increased risk of
morbidity and mortality. We studied the long-term incidence
of AF and compared it with chronic rheumatic heart disease
without AF. We also studied its correlation with mitral valve
area (MVA) and left atrial (LA) size. In AF there is significant
increase in risk of heart failure, thromboembolism, angina
pectoris and stroke as compared to pattern without AF. Larger
LA dimension at presentation is associated with a progression
of chronic AF. The study included 198 patients with chronic
rheumatic disease with AF and 68 patients without AF.
Echocardiographic data could be available in only 104 patients
(72 with AF, 32 without AF). MVA were calculated along with
LA size in two groups of patients. 198 patients with AF and
68 patients without AF were included in the analysis. Among
198 patients with AF, 114 were female and 84 were males. In
non-AF group, females were 43 and males only 25. Age
incidence in this series was from 8 years to 74 years. The
incidence of AF in females outnumbered males. MVA among
AF group varied from 0.6 cm2 to 4.9 cm2. LA size varied from
3 cm to 5 cm among mitral stenosis (MS) and 3.4 cm to 6 cm
in combined lesion MS and mitral regurgitation (MR). In nonAF group, MVA varied from 0.7 cm2 to 3 cm2 among MS and 3
cm2 to 6.4 cm2 in MS and MR combined lesion. In this series,
though MVA varied from 0.7 to 2.6 cm2 still there was no AF,
but LA size was larger in most of AF group, more than in nonAF patients. Incidence of AF is more in severe MS with large
LA size than in non-AF. In both MS and MS and MR combined,
females outnumbered males in AF Group.
prosthetic heart valve. The oral anticoagulation was stopped
to avoid the risk of teratogenecity. The low molecular weight
heparin (LMWH) was monitored with direct pre-dose anti-Xa
factor estimation. The pre-dose anti-Xa factor was maintained
between 0.7 and 1.0 unit/L. The prosthetic valve function was
periodically evaluated clinically as well as by echocardiography.
In the 11th week of pregnancy, the patient developed easy
fatiguibility and shortness of breath at rest for which she was
examined clinically and found to have diminished intensity of
the prosthetic valve click. The echocardiography revealed high
mean diastolic pressure gradient across the prosthetic mitral
valve with severe pulmonary arterial hypertension. After
obtaining consent from the patient, limited fluoroscopy with
abdominal lead shield was done which confirmed that one
leaflet of the prosthesis was stuck. However, after detailed
counseling, the patient could be successfully thrombolyzed
with streptokinase (STK). To conclude, LMWH enoxaparine
may not be a safe choice of anticoagulation in prosthetic heart
valves and could be lethal despite anti-Xa factor monitoring.
There is a similar report of prosthetic valve complication with
LMWH leading to maternal death in 2 patients in 2003 after
which Food and Drug Administration USA (FDA) has issued
added precautionary warning for the use of LMWH in
pregnancy.
Relation of Left Atrial Thrombus and
Spontaneous Echocontrast in Patients of
Mitral Stenosis
230
GK Shaha, MA Ali, N Hossain, A Zaher, ATM Shah,
AAS Majumdar, M Ali
National Institute of Cardiovascular Disease, Dhaka
Low Molecular Weight Heparin (Enoxaparin)
229
could be a Lethal Choice in Mechanical
Prosthetic Heart Valve in Pregnancy
Vipin Talwar
A 29-year-old married female, operated case of mitral valve
replacement (MVR) in 1999 with 27 size Carbomedics bi leaflet
mechanical prosthesis came to us with 1-week pregnancy. The
pregnancy was a precious one as the patient conceived after 3
years of marriage. After detailed counseling of both husband
and wife, patient was started on subcutaneous enoxaparine
at a dose of 1 unit /kg body weight in 2 equal divided dosage
as per the recommendation of American College of Chest
Physicians (2001) for use of anticoagulants in pregnancy and
C.p65
467
This study consisted of 60 patients of mitral stenosis who
underwent transesophageal echocardiography (TEE) in our
institute. The mean age of the study population was
32.5±8.45 years with male-female ratio 1:2.5. Spontaneous
echo contrast (SEC) was observed in 39 cases in left atrium
(LA) or in its appendage; of them 19 cases had thrombus
(effective frequency 13.65) and 20 cases had no thrombus
(effective frequency 25.35). Twenty-one patients had no
spontaneous echo contrast, of them majority (19 cases,
effective frequency 13.65) had no thrombus. Only two cases
(effective frequency 7.35) had thrombus in their LA or in its
appendage. This analysis reveals that spontaneous echo
contrast in LA or in its appendage bears a close relationship
with thrombus; when thrombus is present, spontaneous
echocontrast is almost always present. Again, the presence of
spontaneous echo contrast strongly predicts presence of
thrombus and absence of echocontrast is rarely associated with
thrombus.
11/24/2005, 10:50 AM
Indian Heart J 2005; 57: 468–489
468 Non-Coronary Interventions
Transradial Approach in Renal Angioplasty
and Stenting
231
BB Chanana, Pramod Kumar, Amar Singhal
Maharaja Agrasen Heart Institute, New Delhi
We have been using transradial approach for angioplasty
and stenting since last nine years. We report two cases which
demonstrate the feasibility of the transradial approach to treat
severe renal artery disease safely with renal angioplasty and
stenting in Indian scenario (smaller radial arteries). Case 1 was
a 70 years male, known hypertensive, non-diabetic, nonsmoker with normal lipids and history of percutaneous
transluminal coronary angioplasty (PTCA) to left anterior
descending artery (LAD) 3 years ago. A 6 F sheath was put in
left radial artery, 6 F JR guide inserted and left renal artery
was hooked. Direct stenting was done with 4 ×16 mm Heli
stent which was dilated with 5×15 mm balloon with good
results. Case 2 was a 85 years male, with history of
hypertension, non-diabetic, non-smoker having mild
dyslipidemia, recent worsening of angina and azotemia. A 5
F sheath was put in left radial artery. Radial artery angiography
was done to check the size of radial artery. Sheath was changed
to 8 F. The 8 F JR3.5 guide was used to hook the left renal
artery. Lesion was dilated with 3×15 mm coronary balloon.
Stenting was done with 7×24 mm Genesis renal stent with
good result. At follow-up no local complications were observed
and azotemia improved in 3 weeks time. In conclusion, (i)
transradial approach is feasible and comfortable for renal
artery interventions also; (ii) anatomically most renal arteries
course caudally from the aorta and transradial approach
provides more coaxial catheter placement making
interventions easier than femoral approach; and (iii) left radial
route is preferable since it is relatively shorter compared to right
one and gives longer usable catheter length.
Predictors of Poor Outcomes after Amplatzer
Device Closure of Post- Myocardial Infarction 232
Ventricular Septal Rupture
M Vijayakumar, C Rajiv, Mahesh Krishnakumar,
KK Haridas
Amrita Institute of Medical Sciences and Research Centre, Kochi
Transcatheter closure of post-myocardial infarction
ventricular septal rupture (PMIVSR) is an emerging alternative
to surgical closure in these high-risk patients. We
retrospectively analyzed the clinical as well as the
hemodynamic variables in patients who died following
transcatheter closure to see if there are pre-procedural
predictors of poor outcomes. Between April 2000 and June
2005, 13 patients underwent transcatheter closure of
PMIVSR. There were 11 males and 2 females with age ranging
from 46 to 85 years. There was history of prior reperfusion
therapy with thrombolysis in 10 patients and with
percutaneous coronary intervention (PCI) in 2 patients. One
D.p65
468
patient had no reperfusion therapy. The average time from
myocardial infarction (MI) to PMIVSR closure was 9.6±8.5
days. The device closure was done by standard technique using
Amplatzer ventricular septal defect (VSD) (7) and atrial septal
defect (ASD) (5) devices. Nine patients required intra-aortic
balloon pulsation (IABP) support and 10 mechanical
ventilation. There were 6 (46%) in-hospital deaths out of
which 3 were non-cardiac. During a mean follow-up of 18.5
months there was no further death in survivors. Higher
functional class (Killip class III or more), low mean arterial
pressure (73±8.4 mmHg) and need for early intervention
(5.8±2.4 days) after MI were noted in those who died inhospital in comparison to survivors (Killip class II or less, mean
arterial pressure > 85±10 mmHg and late intervention 13±19
days). Other factors like IABP requirement, days on ventilation,
Qp/Qs ratio, pre-treatment, renal function, ejection fraction,
number of vessel disease were not different. Mortality following
device closure was 46% and the poor outcomes occurred in
patients with higher Killip class, low mean arterial pressure
and the need for emergent intervention early after the MI as
dictated by the hemodynamic status.
Balloon Mitral Valvuloplasty with Accura
Balloon: Comparison of Oversizing with
Underdilation to Undersizing with Full
Dilation
233
AU Mahajan, C Prabhakar Koregol, B Sreenivasa
Mumbai
Sixty-three patients who underwent balloon mitral
valvuloplasty (BMV) in last one year were analyzed. Group A
consisted of 32 patients who underwent BMV with oversizing
the balloon and under-dilation. Group B had 31 patients who
underwent BMV with undersizing balloon and full dilation.
Definitions utilized for the study were as follows. Optimum
dilation size: (height in cm/10)+10, in mm; Oversizing: use of
balloon of 1-2 mm size higher than optimum calculated
dilation size; Undersizing: use of balloon 1-2 mm smaller than
calculated optimum dilation size; Underdilation; balloon
inflation to 1-2 mm less than maximum size at the vest. Mean
age of patients was 24 years (range: 13-54 years); 78%
patients were females and 22% men. There was no statistically
significant difference in baseline characteristics of two groups.
Same set of operators were involved in performance of
procedure in both the groups. All patients in both groups had
successful procedure. The mean mitral valve area increased
from 0.82 cm2 to 1.74 cm2 in group A and 0.82 cm2 to 1.9 cm2
in group B. More than grade 1 + mitral regurgitation (MR)
was noted in 7 (21.8%) patients in group A and 4 (12.5%)
cases in group B. One patient in Group A had severe
subvalvular trauma leading to severe MR requiring surgery.
11/24/2005, 11:06 AM
Indian Heart J 2005; 57: 468–489
Non-Coronary Interventions 469
There were no major vascular complications or mortality in
either group.
Pre-BMV valve area
Post-BMV valve area
Pre-BMV MR
Trivial
Grade I
Post-BMV
MR Grade I
More than grade 1+
Sub valve apparatus trauma
Sever MR requiring surgery
Group A (n=32)
Group B (n=31)
0.82 cm2
1.74 cm2
0.816 cm2
1.90 cm2
15
13
16
16
25
07
01
01
27
04
00
00
Our study shows a trend toward comparable efficacy with
better safety of BMV with Accura balloon by undersizing with
full dilation compared to oversizing and underdilation.
stable without echocardiographic evidence of increasing
pericardial fluid. On follow-up of 3-12 months, all patients
were asymptomatic without any evidence of pericardial
constriction. CP of “Stitch type” during MV or that by TPI lead
is unique as dilator/TPI lead across pericardium depicts exact
type of perforation, allowing transpericardial instillation of
glue at perforation site, thus avoiding surgery.
Transcatheter Closure of Ruptured Sinus of
Valsalva Aneurysms
235
Mohit D Gupta, Ashutosh Sahu, Naresh Goyal,
Arima Nigam, Vimal Mehta, Ramesh Arora, Sanjay Tyagi
GB Pant Hospital New Delhi
Transcatheter Sealing of Cardiac Perforation
234
by Glue: A New Technique
Mohit D Gupta, Vimal Mehta, Sanjeev Kathuria,
BB Bharti, S Ramakrishnan, Sanjay Tyagi
Cardiac tamponade (CT) due to cardiac perforation (CP) is
a dreadful complication usually requiring surgical repair. We
report successful repair of CP percutaneously in two different
clinical situations (i) during mitral valvuloplasty (MV) (ii) right
ventricular (RV) perforation by temporary pacemaker lead
(TPI) in 2 patients, by a new technique. Between January 2004
and May 2005, acute CT following inappropriate transseptal
puncture occurred in 5 patients during MV and in 2 patients
subacutely by TPI lead causing RV perforation and manifesting
as intermittent capture failure with hypotension. During MV,
CT occurred due to tear of right atrium (RA) and left atrium
(LA) wall transpericardially without actual puncture of the
septum (stitch phenomenon) by the 14 F dilator. All the
patients were managed as follows: (i) a 14 F dilator was
promptly passed into LA over roundwire to seal false tract; (ii)
a 7 F sheath was passed from subxiphoid route and
pericardiocentesis started; (iii) once hemodynamically stable,
a 7 F right Judkin’s guiding catheter (GC) was introduced into
pericardial space and manipulated over 0.035” Teflon wire till
its tip touched the 14 F dilator (iv) after flushing catheter with
10% dextrose, a non-ionic media, 3-4 ml of cyanoacrylate glue
(Nectacryl Reddy’s Lab, India) was injected rapidly through
the GC with its tip abutting 14 F dilator (v) as polymerization
time of glue is 15 s, the dilator, GC and roundwire were slowly
withdrawn over next 10-12 s to avoid entrapment in glue. Steps
(ii) to (iv) were also applied in the 2 patients with RV perforation
with TPI lead tip in pericardial space depicting site of
perforation, except that a second TPI lead was placed in RV
before procedure. All patients remained hemodynamically
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With advent of various occlusion devices for closure of
congenital defect, we attempted transcatheter closure of
congenital ruptured sinus of Valsalva (RSOV) in 14 patients.
Between January 1995 and April 2005, transcatheter closure
of RSOV was attempted in 14 patients (11 males, 3 females),
in age range 14 to 35 years. All were symptomatic (NYHA class
II-IV) with features of congestive cardiac failure.
Echocardiography revealed origin of aneurysm (i) noncoronary sinus (n=5) with drainage into right atrium, (ii) from
the right coronary sinus (RCS) (n=9) (drainage into right
ventricular (RV) inflow in 3, into right ventricular outflow
(RVOT) (n= 6). None had associated ventricular septal defects
(VSD) or significant aortic regurgitation (AR). Size of defect
assessed echocardiographically varied from 6-12 mm.All
patients had normal origin of coronary artery and significant
left-to-right shunt (> 2:1). Arteriovenous loop was established
by crossing defect from aortic end and snaring it out of femoral
vein. Defect sizing was done with Swan-Ganz catheter or
Amplatzer sizing balloon and stretched diameter varied from
8 mm to 14 mm. Occluder devices were deployed by antegrade
venous approach in all patients [Rashkind umbrella device,
n=2 (before1998), Amplatzer duct occluder, n=10 and
Amplatzer atrial septal occluder, n=2] under fluoroscopic and
echocardiographic guidance taking care that there was no
impingement on the coronaries or on aortic/tricuspid valve
before releasing device. There was complete abolition of shunt
in 12 patients. One had significant residual shunt causing
intermittent hemolysis necessitating urgent surgical repair
while another with mild residual shunt had infective
endocarditis after 3 months. All but one patient (NYHA class
IV pre-procedure who died of progressive heart failure) became
asymptomatic within 2 weeks. On mean follow-up of 42
months (range 2-122 months) all patients were asymptomatic
with device in situ and no residual shunt. Transcatheter closure
of RSOV is safe and feasible with available Amplatzer devices
and should be considered as a preferred treatment modality in
patients without associated VSD or significant AR.
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Importance of Echocardiographic Guidance
for Septal Puncture in Mitral Stenosis
Patients with Persistent Left Superior Vena
Cava and Dilated Coronary Sinus
236
Vijay Trehan, Bishwa Bhushan Bharti, S Ramakrishnan,
Naresh K Goyal, Vimal Mehta, S Anandaraja, Arima
Nigam, Mohit Dayal Gupta, Manish Sharma, Dinesh Raj,
Sanjay Tyagi
Persistent left superior vena cava (LSVC) is an uncommon
anomaly being reported in 1 out of 348 autopsies. Acquired
rheumatic mitral stenosis (MS) may occasionally coexist. We
report a series of 5 cases of rheumatic MS associated with
persistent LSVC and share the difficulty encountered during
percutaneous transvenous mitral commissurotomy (PTMC).
In the last five years, 5 patients of symptomatic severe MS
(mean age 22±8 years; 6 females) were found to be associated
with persistent LSVC. In the first patient, the diagnosis was
confirmed only after a difficult septal puncture. In the rest of
the patients, a dilated coronary sinus (CS) on
echocardiography led to the suspicion of LSVC, which was
confirmed by contrast echocardiography. Detailed angiographic documentation of LSVC and dilated CS were done to
delineate the distorted atrial septal anatomy. During PTMC,
under fluoroscopic guidance the 0.032” guidewire could not
be advanced into the left subclavian vein in all the patients.
Echocardiographic guidance was very useful, as with
traditional angiographic landmarks it was difficult to find the
correct place for septal puncture. The septal puncture needle,
while pointing posteromedially as it is pulled down along the
interatrial septum (IAS), tended to frequently slip into the
dilated CS through a wide funnel of CS os. The needle tip still
pointing superomedially and posteriorly used to jut against the
CS roof giving a mistaken feeling of IAS. At this point tenting
of the IAS could not be seen on echocardiography, forcing us
to withdraw and reposition the needle tip further
anterosuperiorly, wherein tenting of the IAS could be
confirmed on echocardiography. A little further advancement
of the needle tip at this juncture accomplished a successful and
safe septal puncture. None of the patients had pericardial
tamponade or any major complications. Increased awareness,
prior recognition of persistent LSVC, and use of
echocardiographic guidance are essential to avoid difficult
septal puncture and potential complications.
Outpatient Ilio-Femoral Interventions
237
H Malhotra, S Shah, N Tanwar, K Jani, N Vayada,
M Patel, S Gupta, A Ranjan, T Patel
The traditional approach for percutaneous interventions
of the iliac artery and arteries of lower limb is through femoral
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artery. There are no reports of these interventions through the
radial artery to the best of our knowledge. We report our early
experience of ilio-femoral interventions through transradial
approach (TRA) in 4 cases of iliac and 2 cases of superficial
femoral artery (SFA) interventions performed at our centre
from January 2004 to June 2005. In all cases the left radial
route was used to perform procedure. The mean age of these
patients was 57.3±9.4 years, all were men, 2 patients were
diabetic, 4 were hypertensive, 1 had dyslipidemia and 5
patients were smokers. The indications for intervention were
intermittent claudication in all patients. Left radial artery was
cannulated using 20” Jelco cannula, 0.025” Terumo
guidewire and Terumo sheath. The hardware used and
outcomes are summarized in the table.
Iliac PTA (n= 4)
SFA PTA (n= 2)
Sheath/Guide
7 F 90 cm Shuttle
or Pinnacle sheath
6 /7 Fr 125 cm Judkins
right/Multipurpose
Guidewire
0.014” (BMW/
Exchanger)
Balloon length
Rapid exchange 145-150 cm long balloon (Ultra-soft
UV / Express billiary SD)
Stenting
100%
50%
Stents
Bridge assurent,
Express LD
Express billiary SD
Success
100%
100%
Major complications
None
None
Minor complications
1/4
0/2
All patients were mobilized immediately and discharged on the
day of procedure on low molecular weight heparin, aspirin,
clopidogrel and cilastazol. No patient had recurrence of
claudication at a mean follow-up of 7.4±6.9 months.
Availability of refined hardware (0.014" guidewire-based low
profile balloons and balloon expandable stents, wide lumen
guide catheters and long equipments) has played a big role in
the success of these interventions through TRA. Thus, present
equipment allows delivery of stents up to 8 mm with the use
of 6/7 F long sheath. The left TRA is preferred as there is no
need to traverse arch of aorta and it is easier to enter the
descending aorta. To conclude, ilio-femoral interventions
through TRA are technically feasible, safe and associated with
no major complications. With refined hardware, TRA appears
to be a good alternative entry site for ilio-femoral interventions
with major advantage of immediate mobilization and same day
discharge.
Failed Device Placements for Atrial Septal
Defects - What have we Learned?
238
Bhanu Duggal, S Radhakrishnan, Smita Mishra,
Nagendra Chauhan, KS Iyer, Savitri Shrivastava
Percutaneous closure of fossa ovalis atrial septal defects
(ASDs) with an Amplatzer device is an effective treatment.
However, detailed information regarding failure to deploy the
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device is not available. We analyzed the records of 363 patients
who were taken up for ASD device closure. We came across
17 patients, mean age 7 years (range: 1.5-43 years), mean
weight 17.5 kg (range: 10-70 kg), in whom the device could
not be successfully deployed. We analyzed their
echocardiograms, cardiac catheterization records and surgical
notes. In 9 patients device closure was not attempted after
transesophageal echocardiography (TEE)/balloon sizing
[inappropriate size (n=7), multiple defects (n=2)]. Six patients
in whom several attempts at device clousre failed, had deficient
rims. Of them 2 had deficient inferior vena cava (IVC) rim (1
mm in one, flimsy in another) and in one each a deficient aortic
rim (3 mm), a deficient superior vena cava (SVC) rim (2 mm),
deficient SVC (5 mm) and aortic rim (3 mm) and a deficient
AV septal rim (4 mm). In the last patient the device embolized
after deployment. In one patient with deficient IVC rim, there
were two ASD and deployment of the device in the inferior
defect caused it to prolapse recurrently. In five patients findings
were collaborated surgically. One patient was unwilling for
surgery. In one, the device looked perfectly well positioned on
TEE but embolized after release (both the umbrellas were
inadvertently opened in the left atrium). In last patient the
device repeatedly prolapsed into the right atrium. At surgery
he was found to have a large perforated Eustachian valve,
which was mistaken as an ASD. Critical analysis of ASD size
before the procedure and correct evaluation of rims is helpful
in planning devices. Critical evaluation of device position on
TEE is mandatory before release. Occasionally, common
structure like Eustachian valve may be very large and cause
problems. This is worth keeping in mind.
Balloon Angioplasty of Discrete Native
Coarctation of Aorta in All Age Groups:
Early and Intermediate-Term Follow-up
Results
239
V Keshavamurthy, K Deepak, Reeta Varyani,
A Madhusreedharan, B Barooah, PK Dash
Sri Sathya Sai Institute of Higher Medical Sciences, Bangalore
To evaluate the usefulness of balloon angioplasty for relief
of native aortic coarctation, we reviewed our experience with
this procedure with special emphasis on follow-up results
[including cardiac magnetic resonance imaging (MRI) studies].
During the period of 4 years (March 2001 to March 2005),
115 patients of age group 11 months to 69 years, underwent
the procedure. The recommended standard procedure was
followed. The balloon diameter was chosen to be equal to or
within 1 to 2 mm of the diameter of aortic isthmus and not
greater than the diameter of the aorta at the diaphragm. There
was significant reduction in the gradient across coarctation
of aorta (CoA), achieved at the end of procedure (64±23.4
mmHg to 13.17±12.5 mmHg, p=0.0001). Significant
increase in CoA gradient was found during the pre-discharge
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echo Doppler evaluation (from 13.17±12.5 mmHg on cath
study to 21.0±9.1 mmHg, p=0.0001). This post-procedure
recovery of gradient was more in the sub-set of patients with
left ventricular (LV) dysfunction (9.3±9.4 mmHg to 22.7±6.7
mmHg, p=0.0001). The gradient recovery is possibly due to
elastic recoil of the aorta and due to improvement in left
ventricular (LV) function. Among patients with successful
procedure (CoA gradient < 20 mmHg), restenosis was seen in
29.2% during the follow-up. During follow-up period
(1.5±1.07 years, max. 4.25 years), 89 patients were evaluated
clinically, echocardiographically and using cardiac MRI, 67/
89 (75%) patients had significant CoA gradient (≥20 mmHg).
None of the patients, who had undergone MRI evaluation
(n=26) had aneurysm or dissection of the angioplasty
segment.
Hemodynamics
Before
(mmHg)
After
(mmHg)
p value
Follow-up
Ascending AO pressure
Descending AO pressure
CoA gradient
Echo Doppler CoA gradient
168.8±29.7
104.9±17.4
64.0 ±23.4
63.7±20.9
147±22
134±20.6
13.19±12.5
21.0±9.1
0.0001
0.0001
26.2+11.65
In conclusion, CoA balloon angioplasty is a safe procedure
without significant immediate and intermediate-term
complications, can be done in all age groups with significant
gradient reductions, but optimal results are obtained only in
43.5% at discharge and recurrence of significant gradients was
seen in 29.2% patients during follow-up. These results suggest
that plain balloon angioplasty is not adequate and stenting
may be required for optimal hemodynamic results.
Percutaneous Aortic Valve Balloon Dilation
in Congenital Bicuspid Aortic Valve Stenosis:
Immediate and Short-Term Results
240
K Deepak, V Keshavamurthy, V Reeta, S Madhu,
B Barooah, PK Dash
Percutaneous aortic valve balloon dilation (AVBD) is an
effective treatment modality in congenital aortic stenosis (AS).
Consecutive patients (n=150; males: 105; age range: 5 months
- 36years) who underwent AVBD for congenital bicuspid aortic
valve stenosis from January 2001 to May 2005 at our institute
were retrospectively studied. They were divided into 3 age
groups; Group A<1 year (n=3, 2%), Group B 1-18 years
(n=114, 76%), Group C >18 years (n=33, 22%). Male-female
ratio in each group was 2:1, 3.2:1 and 0.94:1, respectively.
Associated congenital heart disease was seen in 20 (14%)
patients, coarctation of aorta (CoA): 8 (40%), patent ductus
arteriosus (PDA): 5 (25%), pulmonary stenosis (PS): 2 (1.3%),
1 each of congenital mitral stenosis (MS), PDA+CoA and PDA+
ventricular septal defect (VSD). Three patients underwent CoA
dilation along with AVBD. Left ventricular (LV) dysfunction was
present in 12 (8%) patients overall - 1 (33%) in Group A, 7
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Indian Heart J 2005; 57: 468–489
(6%) in Group B and 4 (12%) in Group C; 41% were
asymptomatic or in NYHA class I and 35%, 19% and 5% of
patients were in NYHA class II, III and IV, respectively.
Echocardiography was performed in all cases prior to and after
AVBD. AVBD was done using retrograde balloon technique in
all cases and antegrade technique in one case. Single balloon
technique was used in 140 (93.3%) and double balloon
technique in 10 (6.6%). Aortic annulus diameter was
measured by echocardiography and also by aortography and
the lower value or slightly less used as balloon diameter. The
mean annulus diameter was 14.3±2.1 mm. The overall
balloon annulus ratio was 0.98 and in groups A, B and C it
was 1.2, 0.9 and 0.95, respectively. The optimal result of AVBD
was taken as a ≥50% reduction in mean Doppler gradient /
cath peak gradient.
Dopp peak grad
Dopp mean grad
Cath peak grad
LV sys pressure
Pre
Post
Pre
Post
Pre
Post
Pre
Post
A
B
C
116.3±35.5
42.6±4.2
77.3±12.2
29±4.6
75.2±10.8
24.2±6.8
186±15
130±7.2
112.6±25.7
55.4±14.4
78.6±21.1
38.8±13.1
80.2±24.6
38±11.6
192.6±25
146±12.2
112.4±24
62.1±19.5
78.8±18.7
42.8±13.2
81.6±20.1
41.7±15.8
182±22.7
141.7±12.6
Optimal result was obtained in 100 (66.6%) patients-3 (100%)
in Group A, 84 (73%) in Group B and 13 (39%) in Group C.
The determinants of suboptimal result were older age
(p<0.001), a lower balloon-annulus ratio (0.87±0.17 v.
1.0±0.12 mm; p<0.01) and a higher-mean Doppler
(98.6±18.2 v. 72±19.1) and cath-peak gradient (100.5±20.7
v. 70±18.6). Significant (≥ grade 3) aortic regurgitation (AR)
developed in 12 (8%) - 0% in Group A, 8 (7%) in Group B and
4 (12%) in Group C. The determinants of significant AR were
older age (p<0.01) and a higher balloon-annulus ratio
(1.18±0.12 v. 0.92±0.17 mm; p<0.01). One patient had
cardiac rupture for which surgery was done but the patient
did not survive. No patient required emergency valve
replacement. In the next 6 months-4 years, 110 (73.3%)
patients reported for follow-up and were studied by repeat
echocardiography. The mean doppler gradient achieved
immediately after AVBD was maintained in 105 (95.5%) and
restenosis (grade>60 mmHg) was seen in 5 (4.5%) of the
patients (all in Group C) after a mean follow-up of 2.1 years.
Restenosis correlated only with age of the patient. All patients
with LV dysfunction had normal LV function at a mean period
of 1.6 years of follow-up. All of Group A patients were
asymptomatic; 90% of Group B were in NYHA I and 10% in
class II. 75% of Group C were in class I, 20% and 5% of Group
C were in class II and III, respectively. None of the patients
were in class IV. AR progressed from 0 to grade1 in 10/16
(62%), grade I to grade 2 in 18/92 (20%), grade 2 to grade 3
in 4/30 (13.3%) and grade 3 to grade 4 in 1/10 (10%). Two
patients underwent aortic valve replacement for severe AR
after a mean of 3.2 years. To conclude, percutaneous AVBD is
a safe and effective treatment modality in severe congenital
bicuspid aortic valve stenosis with good immediate and shortterm results. Optimal balloon-annulus ratio is the key to
favorable outcome.
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Percutaneous Retrieval of Embolized
Gianturco Coils during Transcatheter
Closure of Patent Ductus Arteriosus
241
A Shah, A Sanghvi, B Thakkar, H Shah, C Lanjewar,
There are few data from India on transcatheter retrieval
from the heart and the endovascular system of embolized
iatrogenic foreign bodies. We describe our experience of
percutaneous retrieval of Gianturco coils, used to attempt
closure of patent ductus arteriosus (PDA). Among 143 patients
who underwent transcatheter coil closure of PDA at our centre
in the last one decade, 14 (10%) patients had embolization of
the coil. Among these 14 patients (mean age: 10.3±1.7 years,
9 females), coil embolization occurred during the procedure
itself in all but one patient. Transcatheter retrieval of the coil
was attempted using the nitinol gooseneck snare in 13
patients. Most commonly (n=8) 0.038” 8 cm×5 mm coil was
retrieved. Venous sheath and a snare of appropriate size were
used depending on the size of the coil to be retrieved, most
commonly a 10 mm sized snare was required. Left pulmonary
artery (n=10) was the commonest site of coil embolization
followed by right pulmonary artery (n=2) and the descending
aorta (n=2). Transcatheter coil extraction was successful in
12/13 (92%) cases. There was no mortality or any major
systemic complications. One patient required an arteriotomy
to remove the snared coil from the femoral artery. In the
remaining 1 patient, after a failed attempt to remove the coil,
the coil embolized to the subsegmental left pulmonary artery
and was left in situ. There has not been any complication at 10
months of follow-up. In the second case, at the first follow-up
visit after 3 months, 5 cm×5 mm coil was found to have
embolized to the bifurcation of the abdominal aorta. This coil
was not retrieved. That coil has remained at the same site 5
years after the event, without the patient experiencing any
vascular complication. We conclude that an embolized
Gianturco coil can be effectively and safely retrieved using a
gooseneck snare, obviating the need for surgical removal.
Interventional Nephrectomy – Renal
Alcoholization and Renal Artery Coiling :
Transferring Cardiac Technology to Kidneys
242
P Mahesh Babu, R Ravikumar, M Ramanathan,
G Venkatesh, P Susheel Reddy, C Jayarama Reddy,
KN Reddy, Y Vijayachandra Reddy
Surgical nephrectomy for refractory hypertension
associated with shrunken kidney with renal artery stenosis or
pyelonephritis is a well accepted strategy to control multi drug
refractory secondary hypertension. Interventional renal artery
embolization with coils is an extremely simple non-surgical
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alternative to achieve this. However, alcohol ablation of
kidneys similar to septal ablation in hypertrophic obstructive
cardiomyopathy has been tried in few patients, with possible
advantage of total ablation of renal territory compared to renal
artery coiling alone. We report the case of 26-year old male
with end-stage renal disease (ESRD) on maintenance
hemodialysis (HD) awaiting renal transplantation who
presented with very high blood pressure (BP 260/120 mmHg)
despite being on combination of 5 drugs (atenolol, nifedipine,
losartan, prazosin along with frusemide and metalazone on
full doses). The patient had hypertensive encephalopathy and
hypertensive heart disease with left ventricular (LV)
dysfunction and heart failure despite aggressive medical
management. Evaluation revealed single non-functioning
kidney without renal artery stenosis. A total ablation of the
single kidney was achieved by dual technique of renal ablation
with absolute alcohol followed by renal artery coiling. Postprocedure period was uncomplicated but for post-infarction
syndrome. The blood pressure was well controlled at 1 week
on low dose of atenolol and amlodepine with excellent
improvement in clinical status. He is on hemodialysis and
awaiting renal transplantation. The role of interventional
nephrectomy in refractory hypertension associated with ESRD
without renal artery stenosis, and the procedural issues along
with the results will be discussed.
Dynamic versus Static Balloon Sizing of Atrial
243
Septal Defects during Percutaneous Device
Closure
S Mattummal, A Shah, H Bajaj, B Thakkar, C Lanjewar,
Atrial septal defect (ASD) sizing is an important step in
deciding the size of device in percutaneous closure of ostium
secundum defects. The stretched balloon diameter (SBD) is the
reference method in selecting appropriate device size. We
prospectively compared two modalities of measurement of
stretched balloon diameter for device sizing in 18 consecutive
patients, from December 2004 to June 2005. Mean age of
patients was 23.5±14.3 years (range: 5-50 years). There were
17 (81%) females. Mean body weight was 34±9.5 kg. All
patients underwent transthoracic and transesophageal
echocardiogram (TTE and TEE) for measurement of maximum
ASD diameter. ASD sizing was performed initially with
Meditech balloon and later with Amplatzer balloon. SBD with
dynamic balloon sizing was measured when the inflated
Meditech balloon dropped from left atrium to right atrium on
fluoroscopy. SBD with static balloon sizing was measured when
inflated Amplatzer balloon obliterated the shunt. ASD
diameters, as measured by various methods are tabulated.
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Method
TTE
TEE
Mean (mm)
SD
22
7.3
24
8.1
BSD
Meditech
29
6
BSD
Amplatzer
26
7.4
Device
size
28
8.1
There was no residual shunt or device embolization. There was
no impingement on adjacent valves or aorta. No patient
required upsizing of device. We found that dynamic balloon
sizing tends to oversize the ASD when compared to static sizing.
Hence, during ASD device closure, the device needs to be
upsized by 2 mm if Amplatzer balloon is used, while device of
the same size of the SBD is to be used in case of Meditech
balloon.
Transcatheter Device Closure of Rupture of
Sinus of Valsalva
244
S Sreenivasan, H Bajaj, A Shah, I Mammen,
Surgical closure is an established treatment modality for
patients with rupture of aneurysm of sinus of Valsalva (RSVA).
Transcatheter closure (TCC) of RSVA is a novel technique. We
present our experience with 2 patients who underwent RSOV
device closure at our hospital under transesophageal
echocardiography (TEE) guidance. Between July 2004 and
December 2004, TCC of RSVA was attempted using the
Amplatzer duct occluder (ADO) in two patients. Both were
females of age 23 and 30 years in NYHA class II. Both had
bounding arterial pulses and continuous murmur at the lower
left sternal edge. Two-dimensional and color Doppler
echocardiography revealed RSVA from non-coronary sinus in
both. The RSVA opened into right atrium in one and right
ventricular inflow in the other. The echo-estimated minimum
diameter of the defect was 9-10 mm. During TCC performed
under TEE guidance, right heart pressures were elevated and
Qp/Qs ratio was 2:3. In all patients the defect was crossed
retrogradely from the aortic side and an arteriovenous wire
loop was made using the noodle wire and the gooseneck snare.
After ensuring no significant encroachment on aortic valve
on TEE, the ADOs (14/12 mm in one and 12/10 mm in other)
were successfully deployed by the antegrade venous approach.
In one patient a 12/10 mm ADO slipped through and had to
be upsized to 14/12 mm resulting in trivial aortic regurgitation
(AR). Immediately post-procedure, one patient had trivial
residual shunt and one had complete closure. On follow-up at
4-9 months (including angiography in both), both patients
were in class I and had complete closure. There was no device
embolization or infective endocarditis; trivial AR in one patient
and no AR in other. These data highlight that TCC of RSVA is
feasible, safe and effective with the Amplatzer duct occluder
which is well suited to the typical tapering shape of the
aneurysm. It has the advantage of avoiding sternotomy and
cardiopulmonary bypass, specially in unstable patients.
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Long-Term Results of Balloon Mitral
Valvuloplasty in Relation to Initial Valve Score 245
Sai Satish, R Ajay Kumar, T Kallarakkal Jain,
TR Muralidharan, M Ramesh, Asha Moorthy, JSN
Moorthy, S Thanikachalam.
Even though balloon mitral valvuloplasty (BMV) as a
therapeutic procedure of choice in well selected cases of mitral
valve stenosis is established, there is controversy whether the
long-term hemodynamic benefit of this intervention is uniform
or variable depending on the initial valve scoring. This has
prompted us to initiate a retrospective study involving a total
number of 192 patients (60 males and 132 females) who
underwent BMV in our institute between June 1996 and
March 2001. The total echocardiographic score was derived
from an analysis of mitral leaflet mobility, valvular and subvalvular thickening and calcification, which were graded from
0 to 4, giving a total score of 0 to 16. Among the 192 patients,
54 (28%) had a mitral valve score > 8 (and < 12) and they
were categorized as Group A. The 138 (72%) patients with
valve score < 8 were categorized as Group B. All patients
underwent BMV using Inoue’s technique after ruling out left
atrial (LA) appendage clot using transesophageal
echocardiography. Mitral valve area (MVA) (the lesser among
planimetry and pressure half time measurements) and mean
transvalvular gradient (MG) were assessed in all cases before
and one day after BMV and after 3 years. The results are given
in the table as mean ± standard deviation.
Before BMV
After BMV
After 3 years
Mitral valve area (cm2)
Group A
Group B
Mean gradient (mmHg)
Group A
Group B
0.73 ± 0.11 0.75 ± 0.16
1.93 ± 0.38 1.98 ± 0.45
1.79 ± 0.41 1.85 ± 0.47
14.3 ± 5.6
4.2 ± 1.5
5.8 ± 2.1
12.9 ± 6.5
3.9 ± 1.8
5.3 ± 2.4
The mean MVA decreased 0.14 cm2 in Group A after 3 years
as compared to 0.13 cm2 in Group B and MG increased 1.6
mmHg in Group A as against 1.4 mmHg in Group B. To
conclude, whether it is high valve score or acceptable valve
score, both immediate and long-term benefit by way of
achieved MVA or MG are same. Our study shows that a high
valve score has no adverse impact on the long-term outcome
of BMV.
Bioptome-Assisted Coil Occlusion of Patent
Ductus Arteriosus
246
Vikram Sankar, N Jayaprasad, SV Praveen, Mubarak,
Babu Vasudev, Kader Muneer, Shyam Kumar, Vinaya
kumar, CG Sajeev, Johnson Francis, CC Velayudhan,
K Venugopal
Patent ductus arteriosus (PDA) is a common congenital
heart disease, more common in females. If left untreated, it
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can lead to complications like infective endocarditis and
Eisenmenger syndrome. Catheter-based interventions have
largely supplanted surgery in these patients. Different
percutaneous methods for PDA closure are device closure and
coil occlusion, latter being far less expensive than device
closure. Coil occlusion can be a direct delivery or assisted
delivery using bioptome or snare. Bioptome-assisted coil
delivery has the advantage of precisely deploying multiple coils
even in larger PDAs. Here we present our experience in
bioptome-assisted coil closure of PDA. All patients who
underwent bioptome-assisted coil closure of PDA from june
2000 were included for analysis. Details regarding the patient
demographics, angiographic characteristics and procedure
details were retrieved from PDA data base. Of the total 67
patients, 46 were females and 21 males. Mean age was 8.65
years ranging from 8 months to 58 years. Mean weight was
19.3 kg. PDA dimension ranged from 1.8 mm to 5.8 mm with
mean diameter of 3.21 mm; in 16 patients the size was 4 mm.
Number of coils per PDA ranged from 1 to 3 with median of 2
coils. The procedure was successful in all except two in whom
anatomy was not favorable. Coil embolization to aorta occurred
in one patient which was retrieved using snare. In conclusion,
bioptome-assisted coil occlusion is a safe and effective
alternative to surgical closure and much more cost effective
compared to device closure.
Comparison of Coil Occlusion of Patent
Ductus Arteriosus by Direct Delivery and
Bioptome-Assisted Technique
247
CG Sajeev, Sunil Roy, Vikram Sankar, N Jayaprasad,
SV Praveen, Johnson Francis, Kader Muneer,
MD Shyamkumar, G Rajesh, CC Velayudhan,
Sunita Kumari, K Venugopal
Transcatheter closure of patent ductus arteriosus (PDA) by
coil is an accepted therapeutic modality in small PDA. With
bioptome-assisted delivery technique even moderate-sized
PDAs can be closed by coils. The aim of our study was to
compare the safety and efficacy of direct delivery with that of
bioptome-assisted delivery technique. This procedure was
attempted in 103 patients from June 2000 to May 2004. In
34 patients procedure was attempted by direct delivery and in
69 patients by bioptome-assisted technique. Mean age of the
population was 8.8±10.5 years (range: 8 months to 58 years)
and weight ranged from 4 to 60 kg (mean 19±13.3 kg). Mean
duct diameter was 2.6±0.68 mm in the direct group and
3.25±0.86 mm in the bioptome group. The PDA size was > 3
mm in 10 patients in the direct and 45 patients in the bioptome
group. Overall procedure success was 100% when the PDA
diameter was <3 mm. Procedural success was 98% in direct
delivery group and 98 % in the bioptome-assisted group where
PDA was > 3 mm. Residual shunt occurred in 2 patients and
hemolysis in one patient in direct group compared to none in
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bioptome group. Bioptome-assisted technique leads to less
incidence of residual shunt and hemolysis in moderate-sized
PDAs and hence there is less need for further intervention
compared to direct delivery technique in patients undergoing
coil closure of PDA.
Balloon Mitral Valvotomy in Children below
12 Years
248
Mukesh Sharma, Satyendra Tewari, Sudeep Kumar,
We evaluated the immediate results of balloon mitral
valvotomy (BMV) in 61 children aged 12 years with severe
rheumatic mitral stenosis. We retrospectively analyzed
procedural detail of mitral balloon valvotomy done between
January 1999 to December 2004. Mean age was 10.15±2.67
years, male-female ratio was 27: 34 with mean height of
135.4±12.56 cm. All patients were in sinus rhythm with
majority in NYHA class II (n=43) or III (n=18) (mean NYHA
class: 2.27±56). Pre-procedural mean pulmonary artery (PA)
pressure was 48.12±21.5 mmHg. Twenty-three patients had
severe pulmonary arterial hypertension (PAH) while 25
patients had moderate PAH. Balloon size was chosen according
to Lau and Hung and serial dilation was done starting 2 mm
less than the estimated final size. The mean pulmonary
capillary wedge pressure decreased from 23.14±6.58 mmHg
to 12.1±7.51 mmHg. The mean PA pressure decreased from
48.12±21.5 mmHg to 22.74±13.54 mmHg. The mean mitral
gradient decreased from 18.42±4.28 mmHg to 5.15±3.1
mmHg; mitral valve area increased from 0.76±0.15 cm2 to
1.69±0.84 cm 2, end-diastolic gradient decreased from
14.19±2.46 mmHg to 2.62±1.46 mmHg. The procedure was
successful in all patients. Four patients had moderate MR. All
patients are on follow-up with MR becoming mild in one and
remaining moderate in three. Our study shows that mitral
balloon dilation is safe and effective in children <12 years of
age with rheumatic mitral stenosis.
Use of Amplatzer Vascular Plugs in the
Closure of Coronary Arteriovenous Fistula
249
K Subramanyam, R Kapoor, S Radhakrishnan, S
Sreevastav, A Mathur, G Minocha, S Bhadari, TS Kler
Besides coils, no dedicated device is available to close arteriovenous (AV) fistula as yet. The risk of dislodgement of coils
and persistence of residual flow remains a major limiting factor
in big AV fistulas. However, reports are available where patent
ductus arteriosus (PDA) Amplatzers device has been used to
close big AV fistulas. Recently, Amplatzer vascular plug (AVP)
has been designed, but there are no reports regarding its safety
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and efficacy. We present here retrospective study of 3 patients,
where this AVP was used to close AV fistulas (2 patients) and
azygous vein (1 patient).
Patient No.
1
2
3
Age
Sex
Indication
40 years
Male
Coronary AVF
LCx to RV
11 months
Male
Coronary AVF
LAD to RV
Size of device
14 mm
(neck of AVF12mm)
8 mm
(neck of AVF 7mm)
10 years
Female
Post-operative bi-directional
Glenn shunt Azygous vein
decompressing SVC
10 mm and 12 mm
AVF: arteriovenous fistula; RV: right ventricle; SVC: superior venacava
In two patients, because of the large size of the fistula, it was
planned to deploy the vascular plug initially and then deliver
the coil proximal to the device so as to prevent dislodgement
of the coils. In the third patient, where azygous vein was
occluded, second device was deployed as there was persistent
residual flow across the device. Angiographically, no flow was
seen 15 min after deployment of the device, which was
reconfirmed with duplex scan two days after the procedure.
AVP in a selected group of patients is safe, efficacious and easy
to deliver.
Percutaneous Transluminal Septal
Myocardial Ablation
250
G Sudarsana, AG Narayanaswamy, CVN Murthy,
KG Sundar Kumar
Hypertropic obstructive cardiomyopathy is a genetically
transmitted disease with an incidence of 0.2% in the
population and is an important cause of sudden death and
syncope. When there is no symptom relief with optimal
medical therapy, surgery is an established mode of therapy.
Septal ablation with alcohol is an alternative new technique.
Over last 4 years, 5 patients have undergone this procedure.
Mean duration of follow-up was 1.5 years (3 month to 4 years).
Their age ranged from 40 to 64 years (mean 55 years) and 3
were women. All patients had angina, dyspnea and palpitation
not responding to optimal medical therapy. Three patients had
pre-syncope and 2 had recurrent left-sided heart failure. On
Echodoppler study the interventricular septum (IVS) thickness
varied from 24 to 34 mm (mean 27 mm). Resting left
ventricular outflow tract (LVOT) gradient varied from 40 to
325 mmHg (mean: 125 mmHg). On catheterization all
patients had right and left heart study – and after confirming
LVOT gradient, septal artery of interest was identified on
coronary angiogram, and ablation done as per standard
procedure. Echo color Doppler guidance was used during the
procedure. All patients had excellent symptom relief with peak
LVOT gradient 7 to 40 mmHg (mean: 23 mmHg). Mitral
regurgitation (MR) grade decreased by 2. Two patients had
complete heart block and underwent dual chamber pacemaker
after a week of observation. In all, post-procedure CPK values
(425-1820 units) at 6 hours returned to normal at 48 hours.
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At 6 month-follow-up, one patient with complete heart block
had normal atrioventricular (AV) conduction. The
symptomatic relief following the procedure is sustained to date
in all the patients.
Amplatzer Device Closure of Patent Ductus
Arteriosus: Follow-up Results
251
GS Gill, Satyendra Tewari, Sudeep Kumar, Naveen Garg,
Aditya Kapoor, PK Goel, Nakul Sinha
Device closure of patent ductus arteriosus (PDA) is an
acceptable and attractive alternative of surgery. Amplatzer
duct occluder is most recent and user-friendly device, which
can close PDA of almost all shapes and sizes. We have evaluated
the immediate and follow-up results of Amplatzer device
closure of PDA done at our institute between January 1999 to
December 2004. Total 46 patients underwent this procedure
during the study period. Average age of patient was 14±9.2
years (age range: 7 months-40 years). Majority were female:
25 (55%). Mean PDA size was 6.5±1.9 mm (range: 3.4 – 10.5
mm). Size of Amplatzer devices used range from 4×6 mm12×14 mm. Procedure was successful in all cases. There was
no procedural complication. Pulmonary artery systolic
pressure fell from 47.2±25.2 mmHg to 32.7±18.7 mmHg.
Immediately after implantation, 16 (35%) patients had
residual shunt (minimal in 9, mild in 5, significant in 2).
Doppler echocardiography at 24 hours showed persistent mild
residual shunt in 3 patients. No gradients were seen in the left
pulmonary artery or the decending thoracic aorta. Repeat
echocardiography at 3 months showed residual shunt in only
1 patient, which too had vanished at 6 months. On follow-up
of 6 months to 48 months there was no evidence of residual
shunt, device embolization, hemolysis, branch pulmonary
artery stenosis, aortic obstruction or endarteritis. None of our
patient had reopening of duct on follow-up till date. To
conclude, Amplatzer device closure of PDA is an excellent
procedure with excellent immediate and medium- term followup results.
Acquired Gerbode Defect – Successful Device
Closure
252
Vijay Trehan, S Ramakrishnan, Naresh K Goyal,
Bishwa Bhushan Bharti, Vimal Mehta, Arima Nigam,
MP Girish, Ajay Raj, Asit Khanna, Ravinder Batra,
Sanjay Tyagi
Ventricular septal defect (VSD) with communication
between left ventricle (LV) and right atrium (RA) (Gerbode
defect) is a rare defect and is usually congenital. Only a few
cases of acquired Gerbode defect are reported and are mostly
due to infective endocarditis (IE) in patients with ventricular
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septal defect (VSD). We report the successful device closure of
an acquired Gerbode defect following surgical closure of VSD.
A 22-year-old male had presented with dyspnea on exertion
class II with palpitations of 1-year duration. Previously, he had
undergone surgical closure of perimembranous VSD two years
ago. There was no evidence of IE. X-ray revealed cardiomegaly
and increased pulmonary blood flow. Echocardiography
showed an LV to right atrium (RA) shunt with a defect
measuring 6 mm. Cardiac catheterization showed mild
pulmonary arterial hypertension (PAH) and Qp-Qs ratio of 3:1.
As the patient and the surgeons were reluctant for repeat
surgery, the patient was taken up for device closure. Amplatzer
septal occluder was successfully deployed across the defect.
There were no complications. There was no significant increase
in tricuspid regurgitation (TR) and no atrioventricular (AV)
blocks. The patient remained symptom-free with optimal result
on echocardiography at 3 months of follow-up. This is the first
documentation of successful device closure of an acquired
Gerbode defect.
Non-Surgical Management of Cardiac
Tamponade caused by Temporary Pacemaker 253
Lead
Vijay Trehan, Vimal Mehta, Saibal Mukhopadhyay,
Jamal Yusuf, Bishwa Bhushan Bharti, S Ramakrishnan,
Naresh K Goyal, Ashutosh Sahu, Ajay Raj, Sanjeev Kathuria,
Asit Khanna, Sanjay Tyagi
Right ventricular (RV) perforation secondary to temporary
pacemaker lead, resulting in cardiac tamponade, is a rare but
life-threatening complication. Surgery is usually the definitive
management described for such cases. We describe successful
sealing of such a perforation by percutaneous instillation of
cyanoacrylate glue, through a guiding catheter in the
pericardial sac at the perforation site. An 80-year-old lady with
third degree atrioventricular (AV) block underwent urgent
temporary pacemaker implantation (TPI) with a 7 F temporary
pacemaker lead. However, few hours after the TPI,
echocardiography revealed large pericardial effusion with RV
diastolic collapse and the temporary lead was seen traversing
the RV into the pericardial space. Since the patient was
pacemaker-dependent, a permanent VVI pacemaker was
implanted leaving the 7F temporary lead with its tip in
pericardial space in situ. A 5 F introducer sheath was inserted
into the pericardial space through which two 0.035" × 50 cm
guidewires were inserted. One guidewire was positioned at a
site distant from the RV apex for standby access to pericardial
cavity. Over the other guidewire a 12 F introducer sheath was
inserted and 300 ml blood was drained. An 8 F right Judkin’s
guiding catheter was introduced into the pericardial space
through the 12 F sheath and was maneuvered under
fluoroscopy, so that its tip came in contact with the RV apex at
the temporary lead perforation site. Then 4 ml of glue was
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injected as a rapid bolus, followed by 10% dextrose through
the guiding catheter into the pericardial space under
fluoroscopic guidance. To prevent entrapment in the glue, the
12 F sheath and the guiding catheter were pulled out, leaving
only the guidewire for standby access to pericardial space. After
the procedure there was neither worsening of the
hemodynamics nor any increase in the pericardial effusion on
echocardiography. The remaining guidewire was also pulled
out of pericardial space. The patient remained stable and was
discharged on the fourth day, after echocardiography
confirmed only minimal pericardial collection.
Contralateral radial access is used for carotid interventions as
it provides back-up support of aortic arch and eliminates the
unavoidable acute angle in the ipsilateral approach. Ipsilateral
radial is used for vertebral and subclavian interventions as it
offers a direct and simple approach. To conclude, BCI through
TRA are technically feasible, safe and associated with no major
complications. With refined hardware, TRA appears to be a
good alternative for brachio-cephalic interventions.
Device Closure of Atrial Septal Defect in
Children with Transthoracic
Echocardiography Guidance
Percutaneous Brachio-cephalic Interventions
254
JM Shah, S Thanvi, SI Dani, J Prajapati, S Jain,
H Joshi, S Ghosh, K Sharma, HJ Shah, A Jain, T Madan
N Tanwar, S Shah, A Desai, K Jani,
K Fonseca, S Gupta, H Malhotra, A Ranjan, T Patel
The traditional approach for percutaneous brachiocephalic interventions (BCI) is transfemoral route. Alternative
brachial or axillary approaches have been reported. There are
few reports in the literature of these interventions using the
transradial approach (TRA). We report our early experience
of brachio-cephalic interventions (BCI) through the TRA.
From January 2004 to June 2005 we have performed 5 cases
of subclavian stenting, 2 cases of vertebral stenting and 1 case
each of basilar and carotid stenting. Contralateral radial access
is used for carotid interventions and the ipsilateral radial is used
for vertebral and subclavian interventions. The radial artery
was cannulated using a 20” Jelco cannula and 0.025” Terumo
guidewire. A Terumo sheath (5 F/ 6 F) was inserted, which
was changed to a 90 cm long sheath (7 F Shuttle or Pinnacle)
for subclavian and carotid stenting. For vertebral stenting, 6 F
right Judkins guiding catheter was used. A 0.014”
percutaneous coronary angioplasty guidewire was used to
cross the lesions in neuro-interventions, while a standard
0.035” guidewire was used for subclavian stenting. Coronary
stents were used for basilar and vertebral artery stenting.
Peripheral stents (8 mm Express-LD) were used for subclavian
stenting. A carotid Wall stent was implanted in carotid artery.
Angiographic success (residual stenosis < 30%) was achieved
in all interventions (100%) and the procedures could be
completed from the radial route with no need to cross over to
the femoral route. No patient had major vascular
complications including critical limb ischemia or need of blood
transfusion. Minor hematoma occurred in 1 patient. All
patients were mobilized immediately and discharged on aspirin
and clopidogrel 2 to 3 days after the procedure. These
interventions through TRA could be accomplished due to the
availability of refined hardware (0.014" guidewire-based low
profile balloons and balloon-expandable stents, wide lumen
guide catheters). With present equipment stents up to 8 mm
can be deployed easily with the use of 6 F/ 7 F long sheath.
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477
Transcatheter closure of anatomically suitable ostium
secundum atrial septal defects (ASDs) is a safe, accepted and
attractive alternative to surgery. Transesophageal
echocardiography (TEE) is recommended as the standard of
care in these patients. However, TEE in children requires
general anesthesia and increases the procedure time. Hence,
we decided to evaluate whether device closure under
transthoracic echocardiography (TTE) guidance was safe and
feasible. Between January 2004 to May 2005, a total of 18
children underwent ASD device closure (8 males, 10 females;
age range : 5-11 years, mean age being 7±2.1 years). Device
closure was done under TTE guidance in 15/18 (83.33%)
children. All procedures could be performed by using ketamine
and midazolam sedation. ASD device size varied between 12
mm to 24 mm. Mean procedure time was 46 min (range: 3278 min). Mean fluoroscopy time was 19 min (8-38 min). No
complications were seen. To conclude, TTE provides adequate
information needed for successful implantation of atrial septal
occluder to close the secundum ASDs in most children thus
avoiding need for TEE and attendant problems.
Carotid Artery Stenting with Neuroprotection
256
Aseem Dhall, Atul Mathur, Praveer Agarwal,
Madhukar Shahi, Balbir Singh, Suman Bhandari, TS Kler
Carotid stenting has emerged as an attractive alternative
to carotid endarterectomy in extracranial carotid artery
stenosis. Distal embolization has been the Achilles heel of
carotid artery stenting and may result in neurological deficit.
Hence, neuroprotection is recommended during the procedure.
We evaluated 67 patients who underwent carotid stenting with
distal protection devices (DPD) in our institute over last 6 years.
Out of these, 55 were males and 12 females; mean age was
66.4 years. There were 40 diabetics, 36 had associated
coronary artery disease (CAD) and 9 had peripheral vascular
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disease. Twelve patients had bilateral carotid artery (BCA)
disease out of which 6 had contralateral occlusion. Three
patients underwent bilateral carotid artery stenting. Of the 70
DPDs deployed, balloon occlusion device (PercuSurge) was
used in 6 and filter devices in 64 patients (Angioguard 30,
Neuroshield 5, EPI 28, Spider 3). Precise Cordis (J&J) stents
were used in 36 patients and Wall stents (Boston-Scientific)
were used in 34 patients. The procedure was successful in all
the patients. Three had transient ischemic attacks and one had
a major embolic stroke 2 days after the procedure. One patient
died of intracerebral hemorrhage 4 days after the procedure.
In conclusion, neuroprotection during carotid interventions
increases the safety and overall procedural outcomes.
Inferior Vena Cava Filters in General and
Cancer Patients: Indications and Outcome
257
PK Rustagi, JC Mohan, LR Nath, SK Rawal
Metro Golden Heart Institute and Rajiv Gandhi Cancer Institute,
New Delhi
Our experience with inferior vena cava (IVC) filter
placement to prevent pulmonary emboli (PE) in general and
cancer patients with deep vein thromboses (DVT) in particular
was reviewed to identify indications, patient characteristics,
complication, and long-term outcome. A total of 31 patients,
12 male and 19 female, were found eligible for IVC filter of
which 16 patients agreed to undergo the same, between
January 2002 and June 2005. Median age was 57 years
(range: 15-88 years). Out of 16 patients, 11 had cancer of
stage II to stage IV (cancer ovary 4, cancer breast 3, cancer
cervix 3, cancer colon 2); two patients had postpartum DVT
and PE. Two patients had intertrochanteric fracture.
Indications for IVC filter placement were DVT or PE in the
presence of contraindications to anticoagulation thereapy
[perioperative, n=2; thrombocytopenia, n=1; bleeding, n=2 or
anticoagulation failure (recurrent PE, n=2; recurrent DVT,
n=4)]. After filter placement, two patients developed a
recurrent PE, and four patients developed a recurrent DVT. No
significant post-procedure complications were observed. IVC
filter placement in patients with advanced cancer and
thrombotic complications is safe, well tolerated, and can offer
effective therapy/prophylaxis with a low incidence of
treatment failure.
Role of Contrast Echocardiography in a
Setting of Acute Temponade following
Intervention
258
CK Mishra, SN Routray, D Das, A Mishra,
HN Mishra, M Behera
Acute temponade during cardiac interventions requires
prompt recognition and treatment. The placement of a
drainage catheter under fluoroscopic guidance is the standard
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procedure. The small volume of blood causing temponade
during procedure, accentuates the risk by accidental entry into
cardiac chamber during pericardiocentesis. Contrast echoguided pericardiocentesis was prospectively conducted in 7
consecutive patients (5 females, 2 males; mean age 26 + 7
years) with acute temponade over a period of 1 year, following
percutaneous transvenous mitral commissurotomy (PTMC)
using JOMIVA technique. During pericardiocentesis, 5 ml of
pericardial fluid was withdrawn, 1 ml of blood and 3 ml of
saline was agitated in a 10 ml syringe, the visible foam and air
expelled and the agitated fluid injected through the puncture
needle into the pericardium. The area of enhancement caused
by the microbubbles indicated the needle position. Contrast
echo were observed in the pericardial space in 4 patients and
in the right ventricle (RV) in 2 patients. The withdrawal of the
needle for right ventricle (RV) and repeat pericardial contrast
injection confirmed pericardial site of the needle. All the
patients were successively resuscitated without the need for
open heart surgery. It is concluded that contrast
echocardiography enhances the safety and operator
confidence of pericardiocentesis in acute temponade and is a
simple and widely applicable technique.
Feasibility and Safety of Device Closure of
Perimembranous Ventricular Septal defect
259
Satish Chandra Mishra, Charanjit Singh,
Naveen Aggarwal, Anup Banerji, JS Dugal,
Harminder Singh, Prashant Bhardwaj
Military Hospital, Pune
Device closure of ventricular septal defects (VSD) was
reported first time in the literature in 1987. Thereafter many
reports of attempts of transcatheter closure of such defects is
available. However, transcatheter closure of perimembranous
VSD (PMVSD) is a relatively newer modality. We attempted
closure of the same in 13 cases; 8 females and 5 males with
age ranging 1.5 years to 16 years were included. All cases were
either symptomatic or had the echocardiographic evidence of
pulmonary arterial hypertension (PAH) or enlarged left-sided
chambers and had an isolated PMVSD. Those with aortic
regurgitation were excluded from study. One of the females
was aged 55 years of age. Echo size of VSD in these cases
ranged from 3.8 to 8.8 mm. Distance of VSD from aortic cusp
ranged from 2.5 to 4.5 mm. Amplatzer PMVSD occluder was
used to close the defect. Device size ranged from 4 mm to 10
mm. In one case the procedure was unsuccessful because of
partial abutment of tricuspid valve apparatus with the defect,
hindering the delivery of device. In one case the device
embolized in the pulmonary artery (PA) due to smaller device
size, which was successfully retrieved and a bigger device was
deployed, in the second sitting. There were two cases with
trivial residual VSD in immediate post procedure period, which
disappeared during follow-up in next three months. Transient
right bundle branch block (RBBB) was seen in 5 cases, which
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resolved in 3 months time (and at 4 months follow-up in one
case). Device was well seated in all the defects. The first case of
device closure developed complete heart block, which did not
resolve in 3 months necessitating surgical implantation of
epicardial (VVIR) pacemaker. One female patient aged 4 years
developed limb ischemia which resolved 4 months later and
had no residual defect during follow-up one year later.
Transcatheter device closure of PMVSD is feasible and safe with
Amplatzer (asymmetric) occluder PMVSD, in carefully selected
cases. The device requires a close follow-up and the long-term
safety needs to be established in future studies.
Transcatheter Closure of Perimembranous
Ventricular Septal Defect with the Newer
Perimembranous Ventricular Septal Defect
Closure Device
260
Snehal Kulkarni, J Vimala, Pramod Jaiswal
Chennai
Transcatheter closure of perimembranous ventricular
septal defect (VSD) has been always a concern, mainly because
of its proximity to surrounding structures like right coronary
cusp of aortic valve and septal tricuspid leaflet. It has been
possible to close these defects with the modified
perimembranous VSD closure device. During last one year, we
attempted to close perimembranous VSD in 10 patients.
Patients with inadequate aortic rims i.e distance of less than 2
mm from right coronary cusp of aortic valve, patients having
prolapse of right coronary cusp or aortic regurgitation were
excluded from the study. Age of the patient ranged from 1½
year to 40 years and weight range was from 11 kg to 62 kg.
VSD size ranged from 3 to 6 mm and the device size ranged
from 6 to 10 mm in size. There was no technical failure in any
patient. In one patient the device needed to be removed
immediately after deployment due to development of complete
heart block on the catheterization table. There was no aortic
regurgitation in any patient on follow-up up to 1 year. In
selected group of patients, transcatheter closure of
perimembranous VSD is an effective technique with the newer
perimembranous VSD closure device.
Percutaneous Device Closure in a PostMyocardial Infarction Ventricular Septal
Defect: What have we Learned?
261
Pankaj Gupta, N Chouhan, Govind Goyal, Niraj Gupta,
Atul Mathur, S Radhakrishan, Ravi R Kasliwal, R Kapoor,
N Trehan
Escorts Heart Institute and Research Center, New Delhi
Ventricular septal rupture complicating acute myocardial
infarction (MI) has extremely poor prognosis with high
mortality. Percutaneous ventricular septal defect (VSD) device
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closure (PVDC) is a novel but difficult approach in this subset
of patients. Between January 2002 to April 2005, 34 patients
presented to us with acute MI complicated with ventricular
septal rupture. We report our experience of 13 patients (10
male) with mean age 63.8 ± 12.6 years (50-89 years) who
underwent PVDC. Of these, 3 patients underwent secondary
closure for residual VSD surgically. We faced difficulties while
performing interventions, as these patients were very sick,
hemodynamically unstable with gross pulmonary edema
(n=7) and/or cardiogenic shock (n=6) and presented very early
after MI (1.7 ±1.3 days). The VSD location was apical (n=11),
basal (n=1) and mid muscular (n=1), with a mean size of 16.6
mm (range: 7-20 mm) on echocardiography. Percutaneous
closure was performed via right internal jugular vein using
the Amplatzer VSD (n=9) or ASD (n=4) closure devices, mean
size 22.4 mm (range: 18-30 mm). Major difficulties faced while
intervening are: (i) under sizing of VSD on transesophageal
echocardiography (TEE) resulting into device prolapse, which
was tackled by using larger devices (+4 mm), (ii) struck device
with kinking of sheath at VSD site, which required procedural
modification, either by crossing the VSD with whole struck
assembly into left ventricle where kink was relieved, or by
giving support to the sheath using right coronary artery (RCA)
catheter through another groin, using rail-road technique.
Procedural success was achieved in 11 patients. Two patients
who had procedural failure, succumbed to cardiogenic shock
and 2 others with initial success succumbed to device prolapse.
Three patients are still alive with class I/II symptoms and one
patient had sudden death after 10 months. Two patients were
lost to follow-up. Percutaneous VSD device closure is less
invasive although difficult technique for treating this subset
of patients. Echocardiography underestimates the size.
Oversized device and some modifications in technique are
helpful.
Extent of Subvalvular Affection and its Effect
262
on Outcome of Balloon Mitral Valvotomy
K Satish, H Bajaj, S Mattummal, I Mammen, C Lanjewar,
B Thakkar, P Nyayadhish, P Nathani, P Kerkar
We propose that severe subvalvular affection could
undermine the acute results of balloon mitral valvotomy
(BMV). A retrospective analysis of the extent of subvalvular
affection scored prior to BMV and the outcome of BMV
procedure was performed. 257 consecutive patients who
underwent BMV procedure at our hospital between August
2004 and June 2005 were included in the study. The
morphology of the mitral valve apparatus with respect to its
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Indian Heart J 2005; 57: 468–489
suitability for BMV was evaluated routinely.
Wilkins score
≤ 3
>3
p value
Post-BMV
MVA ≤ 1.2
5 (2.6%)
8 (12.3%)
< 0.01
≥ Mod MR
9 (4.7%)
4 (6.5%)
NS
A high subvalvular score is a strong predictor of outcome after
the balloon mitral valvotomy procedure. Patients with high
subvalvular score have a higher incidence of inadequate relief
of mitral stenosis [mitral valve area (MVA) <1.2 cm2). The
presence of high subvalvular score, however, was not
associated with increased risk of developing mitral
regurgitation.
improvement; 18 patients showed reduction in severity of MR
on follow-up (mild MR: 4, moderate MR: 14), only 2 required
mitral valve replacement. Over follow-up of 96.4 ± 38.2
months (range: 5-195 months), 74 (12.2%) patients developed
restenosis, of whom 58 (9.6%) with class III/IV symptoms
underwent successful redilation and 6 (0.9%) underwent
successful third dilation. No deaths occurred during followup. MV provides excellent long-term palliation in pediatric
patients preserving native valve and avoiding complications
of valve replacement. Concomitant severe MR should not be
considered an absolute contra indication in this age group.
Balloon Mitral Valvuloplasty in Patients <20
264
Years of Age: Acute and Intermediate Results
Mitral Valvuloplasty in the Pediatric Age
Group: Immediate and Long-Term Follow-up
Results
263
Mohit D Gupta, Dinesh Raj, P Nandkishore, BB Bharti,
MP Girish, Ramesh Arora, Sanjay Tyagi
Mitral balloon valvuloplasty (BV) is an effective therapeutic
option but there is paucity of data on immediate/long-term
efficacy of BV in pediatric age group (≤ 15 years). Hospital data
between October 1987 and December 2004 were analyzed to
determine immediate/long-term results of BV. In this study
603/6870 (8.7%) children ≤15 years were included. Age
range was 6-15 years (mean: 11.3±2.8 years), mean height
142.2±11.8 cm; mean body surface area (BSA): 1.2±0.2 mm/
m2 and male to female ratio was 1.2:1. All had sinus rhythm.
Pre-procedure mitral valve area (MVA) by echocardiography
ranged from 0.4-1cm2; Wilkins score was < 8 in majority
(n=547, 90.8%). Mitral regurgitation (MR) was mild in 112/
603 (18.5%), moderate in 28 (4.6%), severe in 20 (3.3%).
Inoue balloon (Toray, Japan) was used for BV in 542 (89.8%)
patients and double balloon (Mansfield Scientific Inc) in rest
(BSA: 21-22 mm/m2). Severe pulmonary arterial hypertension
(mean PA pressure ≥ 50 mmHg) was present in 406 (67.3%).
Successful procedure was defined as MVA > 1 cm2/m2 BSA or
mean gradient < 5 mmHg in absence of complication and
restenosis (MVA ≤ 0.8 cm2/m2 BSA or > 50% gain loss); 592
(98.2%) patients had successful BV. MVA increased from 0.73
± 0.16 cm2 to 1.88 ± 0.32 cm2 (p< 0.0001) and mean PA
pressure fell from 68±15.4 mmHg to 27.6±10.4 mmHg (p <
0.001), transmitral gradient reduced from 18.6±6.12 mmHg
to 3.6±3.20 mmHg (p<0.001). Six (0.9%) patients developed
severe MR (4 required mitral valve replacement). One had
cardiac tamponade (expired); 4 had suboptimal result. All with
pre-existing severe MR had successful BV and symptomatic
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S Thanvi, S Dani, J Prajapati, S Jain, H Joshi,
S Ghosh, K Sharma, J Shah, H Shah, T Madan, A Jain
Rheumatic heart disease strikes young in developing
countries and significant mitral stenosis is commonly seen in
pediatric population in South Asia, specially India. We decided
to study the acute and intermediate outcomes in this subgroup
of patients undergoing balloon mitral valvuloplasty (BMV) and
to evaluate if these patients behaved in a manner different from
adults. Patients < 20 years undergoing BMV between January
to December 2004 were taken into the study. After clinical
history, physical examination and laboratory investigations,
detailed 2D echocardiography with Doppler study was done
to confirm the feasibility of the procedure. All pre- and postBMV hemodynamic data were evaluated. Balloon size used and
amount of inflations given were noted. Of the 342 patients
undergoing BMV, 38 (11.11%) were < 20 years age, malefemale ratio being 1.375: 1.
Mean height, cm
Mean weight, kg
Mean LA pressure reduction, %
Mean PA pressure reduction, %
Mean balloon size
Increase in MVA, %
Increase in MR> Grade II
156.2
37.51
40.96
21.73
25.62
48.27
4 (10.52)
130 - 179
20 - 57
27.1 to 16
42.8 - 33.5
22 - 28
0.89 - 1.72
–
LA: Left atrium; PA: Pulmonary artery; MVA: mitral valve area; MR: mitral
regurgitation
None of the patients required surgery for mitral regurgitation
(MR). 28 (73.68%) patients who completed 12 month followup, were in symptom class I and II. BMV in this subgroup
is safe and feasible with a slightly higher predilection for
MR owing to less fibrosed and non-calcified mitral apparatus.
Unlike adults, not chasing valve dilation to optimal
balloon size may reduce the incidence of valve tear and
resultant MR.
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Effect of Redo-Balloon Mitral Valvotomy on
Left Atrial Size and Spontaneous Echo
Contrast in Left Atrium after Restenosis
265
KC Goswami, NK Goyal, S Anandaraja, S Asotra
Left atrial (LA) size and spontaneous echo contrast (SEC)
are important variables for development of thromboembolic
complication in patients with severe mitral stenosis. We
prospectively assessed the effect of restenosis on LA size and
SEC in left atrium (LA). The study included 200 patients who
had undergone successful balloon mitral valvotomy (BMV) and
were on regular follow-up. Patients were assessed by
transthoracic echocardiography at regular intervals for LA size
and SEC before and after BMV. Other parameters evaluated
included mitral valve area (MVA), presence of atrial fibrillation,
LA and LA appendage SEC and clot. LA size was assessed by
planimetery in 4-chamber and parasternal long axis views.
The mean of two values was used. During follow-up, 38 (19%)
patients had restenosis and there was significant increase in
LA size. In 40% patients, the SEC in LA reappeared. Of these
38 patients, 24 (mean age 31.3±8.2 years, 16 male)
underwent redo-BMV. Their LA size and MVA are shown in
the table.
Control
MVA
(cm2)
LA area
(cm2)
13.0±
2.1
PreBMV
PostBMV
60month
FU
Restenosis
1month
FU
12months
FU
0.8±
0.2
2.1±
0.3
1.88±
0.33
0.82±
0.2
1.98±
0.2
1.96±
0.3
29.4±
8.0
24.8±
6.6
19.2±
0.4
26.4±
7.2
23.3±
6.2
20.0±
0.4
One month after redo-BMV, there was significant decrease in
LA size and 40% decrease in SEC. There was further decrease
in LA size and reduction in SEC at 12 months follow-up (there
was only grade I SEC in 8% of patients). We conclude that redoBMV results in significant decrease in LA size and SEC
formation which was maintained during follow-up.
Double Coronary Wire in Balloon Pulmonary
266
Valvuloplasty: A Novel Approach
D Das, A Chattopadhyay, B Bandyopadhyay
Kolkata
Crossing critical pulmonary stenosis by conventional
procedures may be unsuccessful despite repeated efforts. We
report here a novel approach for crossing such lesion
successfully. A 23-day old male baby, weighing 3.1 kg, with
severe valvular pulmonary stenosis (PS) and suprasystemic
right ventricular pressure was taken up for urgent balloon
pulmonary valvuloplasty (BPV). Repeated attempts to cross
the pulmonary valve using Multipurpose (MP), right coronary
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481
artery (RCA) and Swan-Ganz (SG) catheters with the support
of Teflon and Terumo wires were futile. Subsequently, with a
floppy extra support (Guidant) straight tip coronary wire and
a 4 F SG catheter, the valve was crossed easily. To provide
adequate support for advancement of catheter, this coronary
wire was placed in left pulmonary artery (LPA) and a second
one was placed along side. Combined strength of two wires
provided adequate support for advancement of SG catheter
in LPA. The coronary wires were exchanged with a Teflon wire
and the catheter was taken out. The pulmonary valve was
successfully dilated with a 10×4 mm Tyshak II balloon. Double
wire technique has been used during coronary intervention,
but is not described for crossing critical valvular lesion as in
this case. We successfully used this technique and expect it to
be useful in desperate situations.
Retrieval of Foreign Bodies from the
Vascular System
267
A Chattopadhyay, J Naik, S Banerjee, B Bandyopadhyay
Kolkata
Retrieval of foreign bodies from the vascular system is often
a challenging job. We report here three difficult cases of
retrieval of foreign bodies. In the first case, in a 57-year-old
man, who underwent coronary artery bypass grafting (CABG),
the tip of the central venous catheter in the right internal
jugular vein broke away during its removal and lodged in the
lower segmental branch of the left pulmonary artery (PA) with
its proximal tip embedded in the wall of the branch PA. A right
femoral artery (8 F) access was obtained. A 5 mm snare was
used to grab the proximal end of the foreign body but it could
not be dislodged from its location in the branch PA. Hence a
6 F right coronary artery (RCA) catheter was placed alongside
the broken segment so as to move its distal end and position it
parallel to the branch PA. The RCA was used as a guiding
catheter and the snare was passed through it to grab the
proximal end. Since the segment along with the snare could
not be pulled in fully into the RCA catheter, the whole assembly
was taken out as a unit through the femoral sheath. The broken
segment measured 5.4 mm in length and was removed in
totality. No other segments were found to be retained by
fluoroscopy. In 2nd case, in a 25-year-old male who underwent
a mitral valve replacement, the distal segment of the PA
catheter was accidentally tethered from the main shaft and
was found to be lodged in the right atrium. For retrieval, a 6 F
RCA catheter was used as a guiding catheter along with a
10 mm snare. The broken segment measuring 5.2 mm was
retrieved in totality. In 3rd case, in a 52-year-old female, during
permanent pacemaker implantation the introducer sheath in
the kit could not be negotiated and hence, a conventional 7 F
sheath was cut through beyond the valve and used for the peel
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away mechanism. During the procedure, it accidentally
migrated into the left subclavian vein. A right femoral vein
(RFV) access was obtained and a 10 mm snare was passed
through the inferior vena cava (IVC), right atrium (RA),
superior vena cava (SVC), innominate vein into the left
subclavian vein. An 8 cm segment of the sheath was retrieved
intact.
Balloon Mitral Valvotomy in Pregnancy
AS Sathe, SV Sathe, CN Makhale, AC Mehta,
RS Shinde, PK Grant, M Durairaj
268
Rheumatic mitral valve disease is the most prevalent
organic valve disease encountered in pregnant women in
South Asia, often unmasked by the circulatory stress occurring
during normal pregnancy. Balloon mitral valvotomy (BMV)
scores over surgical commssiurotomy with excellent shortterm results in these patients that pose complex therapeutic
issues. This procedure was performed in 102 (6.6%) pregnant
women among 1551 who underwent BMV in our institution
between 2000–2004. Mean age of pregnant patients who
underwent BMV was 26 years (range: 19-38 years). Average
gestational period was 25±5 weeks (range: 21-32). Sixtynine (71%) patients were primigravidas. Twenty-eight (29%)
were multigravidas; 10 (10%) patients were in NYHA class IV,
39 (38%) were in class III and 53 (52%) were in class II. Atrial
fibrillation was present in 7%. Wilkins score was > 10 in 6%,
8-10 in 27% and < 8 in 67% patients. Pre-BMV was 0.77±0.4
cm2 and post-BMV was 1.8±0.4 cm2. Pre-BMV mean gradient
was 22±6 mmHg and post-BMV it was 5±6 mmHg. LA mean
pressure was 26±8 mmHg pre-BMV and 9±7 mmHg postBMV. Mean fluoroscopy time was 4.5 min (range: 2.8–7.5
min). BMV was performed using a flow-guided Inoue balloon
and was successful in 99 (98.5%) patients. Results were
suboptimal in 3 (1.8%) patients. Mitral regurgitation increased
by 1 grade in 48 patients and by 2 or more grades in 10
patients. One patient of 5 months gestation had an abortion
24 hours later. It is concluded that BMV during pregnancy is
a safe and effective procedure provided due care for radiation
protection and care of the expectant mother are ensured.
Tricuspid Balloon Valvuloplasty: Comparison
269
of Various Techniques – Our 5 Years'
Experience
SV Sathe, AS Sathe, CN Makhale, PK Grant,
AC Mehta, RS Shinde, M Durairaj
Among a total of 1551 patients who underwent balloon
mitral valvotomy (BMV) in our institute, 58 (3.7%) underwent
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tricuspid valve dilation during the same procedure. There were
36 (63%) females and 22 (37%) males. Methods of tricuspid
valve dilation included: (i) Inoue balloon dilation using the 18
mm and 28 mm size balloons, (ii) Mansfield double balloon
technique placing both double length wires in the right
pulmonary artery, (iii) Right ventricle Inoue technique was
used in 28 (48%) patients. Double balloon technique was used
in 36 (62%) patients. Crossover from Inoue technique to double
balloon method was required in 6 (10%) patients. Pre-dilation
mean gradient across the tricuspid valve was 11 mm (range:
5-19 mm) and post-dilation was 4 mm (range: 2-8 mm).
Double balloon technique achieved better results than Inoue
method. Right pulmonary artery parking of wires in double
balloon method gave maximum stability during dilation versus
right ventricle position. In conclusion, Mansfield double
balloon method gives better results than the single Inoue
balloon technique. Parking the 2 wires in the right pulmonary
artery gives maximum stability during dilation.
Balloon Mitral Valvuloplasty in Cases with
Left Atrial Appendage Thrombus
270
SV Sathe, CN Makhale, RS Shinde, AC Mehta,
AS Sathe, PK Grant, M Durairaj
In our series of 1551 patients who underwent balloon
mitral valvotomy (BMV) from 2000 to 2005, 112 (7.2%) had
thrombus in left atrial appendage (LAA). There were 42 (38%)
males and 70 (62%) female patients. Age ranged from 19 to
58 years (mean: 34 years). Mean mitral valve area (MVA) was
0.78 cm2 (0.5-1.2 cm2). All patients were anti-coagulated
optimally for a period of 6 weeks. The following technical tips
are advocated: (i) minimal manipulation of the spring wire and
balloon in the left atrium, (ii) avoiding horizontal balloon
positioning, (iii) avoiding vigorous and sudden withdrawal of
stylet during a failed crossing attempt. Mean valve gradient,
pre-BMV was 16 mmHg, post-BMV was 6 mmHg. Mean valve
area, pre-BMV was 0.78 cm2 and post-BMV 1.7 cm2. There
was no occurrence of major or minor stroke or evidence of
systemic embolization during or after procedure. Two patients
had transient aphasia during the procedure which recovered
immediately within 7 and 15 min. It is concluded that BMV is
safe and effective in patients with left atrial appendage
thrombus. Optimal anticoagulation protocol pre- and postprocedure and careful technique and precautions are
necessary to avoid complications.
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Transcatheter Closure of Atrial Septal
Defects with Amplatzer Septal Occluder:
Immediate and Long-term Follow-up Results
271
Sanjay Tyagi, Vijay Trehan, Vimal Mehta,
Saibal Mukhopadhyay, Jamal Yusuf, Bhola Shankar Vivek,
S Ramakrishnan, Bishwa Bhushan Bharti, Naresh K Goyal,
Arima Nigam, Ashutosh Sahu, Mohit Dayal Gupta,
Asit Khanna, Manish Sharma, Ajay Raj
Transcatheter closure of ostium secundum atrial septal
defects (OS ASD) is an accepted alternative to surgical closure
with minimal morbidity and mortality. We report our single
center experience, with the use of self-expanding Amplatzer
septal occluder (ASO) along with long-term follow-up results.
Between January 1998 and June 2005, 254 patients (152
females), age ranging from 2.5-56 years (median: 17 years)
and weight ranging from 12-62 kg (median: 36 kg) underwent
closure of OS ASD using the ASO. Included were patients with
echocardiographic evidence of adequate septal margins as
assessed by transesophageal echocardiography (TEE).
However, 45 (17.7%) patients, with insufficient anterosuperior
margin (< 5 mm) were also included. The size of the ASD as
assessed by TEE varied from 8-36 mm (17.7±6.2 mm) and the
balloon-stretched diameter varied from 10 to 38 mm (mean:
19.8±7.3 mm). The size of the device chosen was 1 to 3 mm
larger than the balloon-stretched diameter and ranged from
12-40 mm (range: 21.2±7.2 mm). Device was deployed under
echocardiographic and fluoroscopic guidance. Device could be
positioned successfully in 252 (99%) patients including all with
deficient antero-superior margin. It could be positioned
successfully in first attempt in 237 (94%) patients, while in
15 (6%) patients twisting of the waist after first deployment
required reloading of the device and could be deployed
successfully in all in second attempt. All patients were
discharged after 48-72 hours on aspirin (5 mg/kg) for 6
months. The incidence of residual shunt assessed by
transthoracic echocardiography (TTE) after the procedure was
2% (n=6) and all had trivial shunts. Two (1%) patients had
embolization of the device within 15 min of deployment and
had to be surgically removed. There was no incidence of
atrioventricular (AV) valve dysfunction, atrial arrhythmias or
AV block. On follow-up of 3 months, all 6 patients with trivial
shunt showed no residual shunt. On follow-up of 2-73 months
(range: 43±7 months) there has been no incidence of
migration or fracture of the device, thromboembolism,
infective endocarditis or sudden cardiac death. Closure of OS
ASD with ASO is safe and efficacious with very low rate of early
and late complications. Patients with deficient anterosuperior
margins can also be taken up for the procedure.
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483
Duct Occluder – Deployment Difficulty due to
272
Inadequate Shape Memory
Vijay Trehan, Arima Nigam, S Ramakrishnan,
Naresh K Goyal, Bishwa Bhushan Bharti, Vimal Mehta,
Ravinder Batra, Ajay Raj, P Nanda Kishore,
Asit Khanna, Sanjay Tyagi
Transcatheter closure of patent ductus arteriosus (PDA) by
duct occluder (DO) is now an established procedure and is
associated with relatively few complications. We report an
unusual cause of deployment difficulty with the duct occluder.
The duct occluder failed to assume the intended shape in seven
patients amongst a series of 280 patients. Of these, 238
patients received Amplatzer duct occluder (AGA, USA) and 42
patients received Blockaid® duct occluder (Blockaid, Shanghai,
China). In six patients, the non-resumption of the shape of
the duct occluder occurred at the pulmonary end and in one
patient it occurred at the aortic end. The non-resumption of
the shape of duct occluder at the pulmonary end resulted in
large residual shunt. The pulmonary end of the device was
made to resume its original shape with the help of Amplatz
gooseneck snare in four cases and by simple push by a pigtail
catheter in one case. Non-opening of the retention skirt at the
aortic end in one patient was rectified with a gentle push by a
pigtail from the aortic side. All the seven patients with
deployment difficulty had received Blockaid® duct occluder.
The non-resumption of the intended shape was probably due
to the inadequate shape memory of the device.
Acute Mitral Regurgitation Following
Percutaneous Transvenous Mitral
Commissurotomy – Acute Stabilization by
Creation of Atrial Septal Defect
273
Vijay Trehan, Naresh K Goyal, S Ramakrishnan,
Bishwa Bhushan Bharti, Vimal Mehta, Ashuthosh Sahu,
Balram Mishra, Mohit Dayal Gupta, Praveen Singh,
Saibal Mukhopadhyay, Sanjay Tyagi
Acute severe mitral regurgitation is a dreaded complication
of percutaneous transvenous mitral commissurotomy
(PTMC), often resulting in life threatening hemodynamic
situation and may require urgent mitral valve repair or
replacement. We describe a simple technique for stabilization
of such patients. Inoue balloon was used to enlarge the atrial
septal defect (ASD) and we studied the hemodynamic
parameters. A total of 7 patients developed acute severe mitral
regurgitation and pulmonary edema during PTMC. In all the
7 patients, a large V wave was found and the mean left atrial
pressure was 36 mmHg. At this time, the same Inoue balloon
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was passed across the interatrial septum and dilated to create
an atrial septal defect (ASD) to decompress the left atrium. The
hemodynamic results were favorable. There was a marginal
increase in cardiac output, decrease in left atrial mean pressure
and pulmonary artery mean pressure, and an increase in right
atrial mean pressure. The pulmonary blood flow increased
with a mean QP-QS ratio of 2.5:1. The mean size of the ASD
by echocardiography was found to be 1.4 cm. All the patients
underwent elective mitral valve replacement (MVR) with ASD
closure after 3 - 7 days. This technique can be life-saving in
patients who develop severe mitral regurgitation following
PTMC to stabilize the acute hemodynamics and convert an
otherwise emergency surgery to an elective surgery.
Percutaneous Transvenous Mitral
Commissurotomy in Patients with Severe
Mitral Stenosis and Regurgitation
274
Vijay Trehan, Naresh K Goyal, S Ramakrishnan,
Bishwa Bhushan Bharti, Vimal Mehta, Anandaraja S,
Arima Nigam, MP Girish, Ashutosh Sahu,
Praveen Singh, Sanjay Tyagi
Ideal treatment for patients of severe mitral stenosis with
severe mitral regurgitation (MR) is mitral valve replacement
(MVR). Many of the symptomatic patients with severe mitral
stenosis and regurgitation cannot undergo MVR because of
socio-economic reasons. We attempted percutaneous
transvenous mitral commissurotomy (PTMC) in 22 such
patients after taking their informed consent. All the patients
were NYHA class IV symptomatic and had severe pulmonary
arterial hypertension (PAH). Mean age was 25±12 years and
16 were female. Mean mitral valve area (MVA) was 0.8 cm2
and mean jet area of MR was 9.5 cm2. Patients with more than
minimal calcification of the mitral valve and significant
subvalvular deformity were excluded. All the patients had
normal left ventricular (LV) systolic function. Twelve patients
also had mild aortic regurgitation and 17 patients had atrial
fibrillation. All the patients underwent PTMC with Inoue
balloon. Their pre-procedure mean left atrial (LA) pressure was
28±8 mmHg. After PTMC, mean LA pressure reduced to 15±6
mmHg. One patient had significant increase in regurgitation
because of leaflet tear and required urgent MVR. In other
patients mitral valve opened well and there was no significant
increase in regurgitant jet area. All the patients had
symptomatic improvement. At a mean follow-up of 6 months,
all the patients were doing well. They were asymptomatic or
had NYHA class II symptoms. The mean MVA at follow-up was
1.35 cm2 and mean regurgitant jet area was 12 cm2. To
conclude PTMC may be considered as a palliation even in
severely symptomatic patients with combined severe mitral
regurgitation and stenosis.
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Balloon Mitral Valvuloplasty: Our Experience
275
with a Modified Technique of Septal
Puncture
YP Sharma, S Nandakumar, SG Vivekanand, KK Talwar
Chandigarh
The efficacy and safety of percutaneous transvenous mitral
commissurotomy (PTMC) performed by the Inoue technique
is well known. Atrial septal puncture is a critical step and
requires expertise, as it is a blind procedure. Transesophageal
echocardiography (TEE) is used in some centers for septal
puncture under direct vision. In this report of 23 cases, we
present our experience with the modified and
simplified technique of atrial septal puncture under
fluoroscopic guidance. This technique involves delineation of
atrial septum by contrast injection in lateral view and
puncturing it in the same view in its junction of upper twothird and lower one-thirds (1 cm inferior and anterior to the
aortic valve). The septum could be punctured in all the cases
with success, without any major complications attributable to
this technique. Using this technique, PTMC could be
performed, even in difficult cases wherein the conventional
method of puncturing atrial septum has failed. This technique
can also be used for septal puncture for procedures like
electrophysiological study and balloon atrial septostomy. We
conclude that our modification of the septal puncture
technique is safe and effective as it is done under direct
visualization.
Blood Pressure Monitoring: A Noble Method
for Stepwise Decision Making during
Percutaneous Mitral Valvuloplasty
276
Mahmoud Shabestari, Leila Alizadeh
Imam Reza Hospital, Mashad, Iran
The objective of this study was to find out if systolic blood
pressure changes during percutaneous mitral comissurotomy
(PMC) could be a reliable guide to staged decision making and
evaluate stop point. One hundred and two patients with
moderate to severe mitral stenosis were chosen for PMC with
Inoue technique. Echocardiographic and hemodynamic
criteria were used as references for decision making during
procedure. Systolic blood pressure changes were also evaluated
by a fluid filled system at the end of each balloon inflation and
deflation. To reach optimal results, balloon inflation was done
only once in one case (0.98%), twice in 16.66% and three times
in 82.35% of cases in every stage of balloon inflation;
transmitral gradient was compared with changes in systolic
blood pressure. Correlation between systolic blood pressure
drop and transmitral gradient changes were analyzed with
Pearson method and via regression formula. Relation between
final mitral orifice area and systolic blood pressure were also
analyzed with t test. Significant relation was found in every
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Indian Heart J 2005; 57: 468–489
stage; R: 0.63 in stage 1, R: 0.823 in stage 2, R: 673 in stage 3
in regression formula. In order to find an easy and reliable
method to assess results of PMC, we chose systolic blood
pressure changes, because it could be reached via Gorlin
formula and is theoretically related to mitral orifice area;
practically it is easy to obtain in cath-lab. Significant statistical
relation were obtained with Pearson's correlation and t test.
Quick assessment of success during PMC is possible with
monitoring of systolic blood pressure changes, an easy and
practical way we could rely on.
6 months thereafter. At 6-84 months (mean 38.2±12.8)
follow-up, there was no incidence of migration/fracture of
device, infective endocarditis, AR, hemolysis or development
of conduction defect. Closure of PMVSD with amplatzer
devices is safe and effective with low rate of complications.
Alcohol Ablation of Septum for Hypertrophic
278
Obstructive Cardiomyopathy: Feasibility,
Immediate and Short-Term Outcomes
PV Dattatreya, B Ramesh, ST Yavagal
Transcatheter Closure of Perimembranous
277
Ventricular Septal Defect by Amplatzer
Devices: Immediate and Long-Term Follow-up
Results
Vijay Trehan, Saibal Mukhopadhyay, Asit Khanna,
Jamal Yusuf, Mohit D Gupta, R Batra, S Ramakrishnan,
MP Girish, Sanjay Tyagi
Transcatheter closure of perimembranous ventricular
septal defect (PMVSD) is an evolving new therapeutic modality
even for patients with restrictive defects. We report our single
center experience with amplatzer muscular ventricular septal
occluder (AMSO) and amplatzer asymmetric perimembranous
occluder (ASPO) with long-term follow-up results. Between
January1998 and December 2004, 82 patients (male 58,
female 24), aged 2-33 years (median: 12 years) and weight 852 kg (median 24 kg) underwent closure of PMVSD (60 with
AMSO and 22 with ASPO). Included were patients of PMVSD
with (i) small band or rim of > 5 mm from aortic valve (for
ASPO defects with <5 mm were also included), (ii) distance
from centre to insertion of right coronary cusp >50% of
required device size, and (iii) aneurysm formation. Size of VSD
assessed by echocardiography varied from 2.5 to 12 mm (mean
5.2±2.1 mm). 36 patients had aneurysm formation and 7 had
left ventricle to right atrial communication. Pulmonary to
systemic flow ratio was >2:1 in 32 (39%) patients. Device was
delivered through transvenous route in all cases except one.
Devices were deployed under fluoroscopic and transthoracic
echocardiographic guidance (TTE)/angiography and size of
device chosen (4-14 mm) was 2 mm larger than that
determined by TTE but equal to stretched balloon diameter
(n=34). AMSO could be positioned successfully in all (n=60)
while ASPO had to be retrieved in 3 patients who developed
acute aortic regurgitation (AR) with hemodynamic
compromise (superior margin of defect <3 mm from aortic
valve in all) resulting in a procedural success rate of 96.4%.
Incidence of residual shunt 24 hours after procedure was 3
(0.03%). All had trivial shunts that disappeared within 1
month. New tricuspid stenosis was observed in 1 patient with
AMSO that resolved with balloon dilation. Patients were
followed-up by TTE and ECG at 24 hours, and then at 1, 3 and
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Percutaneous transluminal septal myocardial ablation
(PTSMA) is a non-surgical method of treating severely
symptomatic hypertrophic obstructive cardiomyopathy. Prior
studies indicate that results are as good as surgical myectomy;
transcoronary ablation of septal hypertrophy may be an
effective alternative to surgery. We sought to evaluate
symptomatic and immediate and short-term outcomes of
alcohol ablation of septum in severely symptomatic
hypertrophic obstructive cardiomyopathy (HOCM) cases. From
January 2002 to June 2005 we selected 66 cases for PTSMA
out of which 21 cases could not undergo PTSMA because of
unsuitable septal artery anatomy; 43 cases had left ventricular
outflow tract (LVOT) obstruction and 2 cases had mid cavity
obstruction. Mean age was 43.68±9.86 (range: 18-64) years
with 31males and 14 females; 12 patients were in NYHA class
II, 30 in NYHA class III and 3 in class IV. One patient
underwent prior myectomy, one patient underwent DDDR
pacemaker before the procedure. Mean gradient across LVOT
was 88.65±42.32 mmHg; 5 cases had no resting gradient but
significant gradient was seen on provocation. Grade II or more
mitral regurgitation (MR) was present in 20 cases. Mean
amount of alcohol injected was 1.8±1.2 ml. 42 patients
underwent septal 1 (S1) injection, 2 cases underwent S2
injection and one case underwent multiple injections.
Immediate reduction of gradient was seen in 33 cases.
Immediately after the procedure, gradients reduced from
88.65±42.32 mmHg to 22.33±18.42 mmHg which further
reduced to 12.38±5.68 mmHg at 6 months. Complications
observed were right bundle branch block (RBBB) (29 cases)
complete heart block (CHB) 25 cases (20 transient, 5 cases
persisted for about a week, all reverted back); 3 cases had
periprocedural ventricular tachycardia (VT). One patient had
anterior wall myocardial infarction (AWMI) and ventricular
septal defect (VSD) and died. Three cases had signs of systolic
dysfunction at 6 months. One case underwent myectomy
subsequently. Two cases of mid cavity obstruction had
injection of second septal with excellent results. Overall success
rate was 86% (39/45 cases) at 6 months, all of them were
maintaining good NYHA class (1.17±0.67); all the successful
cases had reduction in MR. No case necessitated pacemaker
implantation. On follow-up, there was significant fall in left
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atrial dimension and LV posterior wall thickness also. There
were 2 deaths during this period (1 had AWMI, 1 had recurrent
VT); mortality rate was 4%. A procedural success rate of 86%
with no pacemaker implantation with excellent improvement
of NYHA class at 6 months, progressive reduction in LVOT
gradient and (PW) thickness even at 6 months and a mortality
rate of 4%, indicate that PTSMA is a safe and effective
alternative to surgery for severely symptomatic HOCM
patients.
Mid-Term Results of Endovascular
Interventional Therapy for Budd-Chiari
Syndrome
279
GS Gulati, S Kumar, S Oram, P Bhargav, K Talesra,
S Sharma, SK Acharya
The mid term results of angioplasty and stent placement
in patients with Budd-Chiari syndrome (BCS) are being
presented. Twenty-eight consecutive patients with BCS (male
18 and female 10; average age, 27 years; age range 14-55
years) were treated with percutaneous transluminal
angioplasty (PTA) and stents during a 2-year period. The mean
duration of symptoms was 36 months. Underlying coagulation
disorder was the cause of occlusion in 10 patients, while 18
patients had no detectable etiology. Sites of stenosis/occlusion
included the inferior vena cava (IVC) alone (n=4), hepatic veins
alone (n=16) and combined IVC and hepatic veins (n=8).
Negotiation of the lesion was attempted through a
combination of transfemoral, transjugular, or transhepatic
routes. All cases of IVC intervention (n=12) underwent balloon
angioplasty alone, while 8/17 patients with hepatic vein
intervention had a balloon-mounted stent placed across the
obstruction. Clinical patency was defined as absence or
improvement of symptoms. Clinical follow-up was
supplemented with color Doppler sonography in all, and
venography in two patients. Technical success was achieved
in 92% (11/12) of IVC and 88% (15/17) of hepatic vein
procedures. The pressure gradient across the lesion decreased
from 20±8 mmHg to 8±3 mmHg for the IVC, and from 25±10
mmHg to 7±2 mmHg for the hepatic vein following the
intervention. Symptoms and signs disappeared or were relieved
after the procedure in 96% (27/28) patients. One patient with
accessory right hepatic vein dilation did not improve and
underwent surgery. Complications included subcapsular liver
hematoma (n=2), neck hematoma (n=1) and pneumothorax
(1), of which the first 3 resolved following cessation of
intravenous heparin infusion post-procedure. Pneumothorax
necessitated intercostal chest tube placement. Mean followup period was 12 months (range: 1-24 months). One patient
had a hepatic vein instent restenosis that was successfully
redilated. To conclude, angioplasty and stent placement is a
safe and effective treatment in patients with BCS with good
mid-term results.
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Non-Conventional Uses of Coronary
Angioplasty Guidewires
280
Mohit D Gupta, BS Vivek, Vimal Mehta,
Ashutosh Sahu, Sanjay Tyagi
G B Pant Hospital, New Delhi
Coronary angioplasty guidewires are currently used only
during percutaneous coronary interventions (PCI). We report
here the other uses of coronary angioplasty guidewires than
PCI. We used radioopaque floppy tips of used coronary
angioplasty guidewires sterilized with ethylene oxide to
manage four patients of different clinical situations. Case 1
was of a coronary to pulmonary arterial fistula in a 55-yearold female [conus branch of right coronary artery (RCA) to
main pulmonary artery] who presented with angina on
exertion, where conventional metallic coils could not be
delivered into the tortuous fistulous tract. Case 2 was a child
with tetralogy of Fallot with recurrent hemoptysis from a
coronary pulmonary artery fistula. Again, due to tortuous
anatomy of the fistula, even a Tracker catheter could not be
stabilized for delivering platinum microcoils. So, cut floppy tips
of guidewires delivered through an over-the-wire balloon
successfully occluded the fistula. Case 3 was a 38-year-old male
with hypertrophic obstructive cardiomyopathy (HOCM)
refractory to medical therapy, in which septal artery occlusion
with wires was attempted because the anatomy was not
suitable for alcohol ablation. In Case 4, a patient of coronary
branch perforation following inadvertent balloon dilation,
closure with wires was attempted. Usual principles of closure
techniques were followed, except that cut floppy tips of
coronary angioplasty guidewires were used. Procedure was
successful in all cases. Check angiogram 48 hours later showed
complete closure of the fistula. Septal artery in the patient of
HOCM and coronary perforation closed within 10 to 15 min.
The left ventricular outflow tract (LVOT) gradient reduced from
187 to 80 mmHg immediately following occlusion of septal
artery. Post-procedure period was uneventful in all cases.
Floppy tips of used intracoronary guidewires adequately
sterilized with ethylene oxide can be used effectively and safely
to close the abnormal vessels in selective patients at reduced
cost.
Coil Closure of Large Patent Arterial Ducts
KM Krishnamoorthy, T Titus, S Sivasankaran,
KKN Namboodiri, G Sriram, JA Tharakan
281
Sree Chitra Tirunal Institute for Medical Sciences and Technology,
Thiruvananthapuram
Conventionally, device closure is preferred over multiple
coils-based approach for large (≥4 mm) patent ductus
arteriosus (PDA). Although coil closure is significantly cheaper,
it is rarely being attempted for this population. We describe
our experience with coil closure of large PDA. Retrospectve
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Indian Heart J 2005; 57: 468–489
analysis of patients, who had coil closure of PDA measuring
≥4 mm by angiography, was done. There were 41 patients [14
(34%) males] mean age 14.1±12.2 years, range 10 months38 years. The procedures were done between 2000-2005. All
were symptomatic before closure (respiratory infection or heart
failure or failure to thrive or palpitation). PDA was 4.8±1.3
mm (range: 4-10 mm). Mean left-to-right shunt ratio was
1.68±0.5 L/min. Mean pulmonary artery pressure was
21.5±15.9 mmHg. All were delivered with a bioptome. Three
patients had an additional deployment of a detachable coil
from the arterial side due to residual flow. Mean number of
coils used was 4.6±1.3. Two (5%) patients required 2 coils; 20
(49%) required 3 coils; 17 (41%) required 4 coils and 2 (5%)
needed 5 coils each. Six patients had mild residual flow at end
of procedure, 5 of these resolved at 3 months follow-up. Limb
ischemia occurred in 8 patients, all were <2 years and were
treated conservatively. There were no other peri-procedural
complications. Obstruction to left pulmonary artery or
descending aorta was not seen in any patient. During the early
period (2002-03), 4 patients switched over to device or surgery
as multiple coils could not be adequately deployed due to the
large size of PDA or small ampulla. In the latter period, these
types of PDA also were closed with coils. Morphology of PDA
or patient size did not influence the success rate. For large PDA,
bioptome - assisted closure with multiple coils is safe and
effective, even in very small children.
Predictors of Mitral Regurgitation in
Patients undergoing Balloon Mitral
Valvotomy
282
SN Routray, CK Mishra, B Das, UK Pattnaik,
HN Mishra, M Behera
Balloon mitral valvotomy (BMV) has been established as
the preferred therapeutic approach for treatment of
symptomatic mitral stenosis and mitral regurgitation (MR)
remains a common complication of the procedure. We studied
332 consecutive patients of severe mitral stenosis who
underwent BMV with Jomiva balloon catheter at our institute,
with the aim of looking for any clinical, echocardiographic,
hemodynamic or procedural factors that could predict
occurrence of MR after BMV. Eighty-four patients (Group I)
who had either new MR or progression of pre-existing MR were
compared to those 248 (Group II) patients who did not have
progression of MR. There was no significant difference between
age, sex, NYHA class, incidence of past closed mitral valvotomy
(CMV), atrial fibrillation or associated aortic regurgitation.
There was no significant differences between two groups in
echocardiographic variables of mitral valve (MV) annulus size,
leaflet excursion, leaflet thickness, papillary muscle length,
chordal length, left ventricular (LV) cavity length/MV annulus
ratio and nodules on MV leaflets. On hemodynamic study ; MV
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area, mean diastolic gradient, mean pulmonary artery (PA)
pressure and mean PA wedge pressure before and after BMV
were also similar between two groups. MV annulus to
maximum balloon size ratio and number of balloon inflations
were also similar between the two groups. Therefore, we
conclude that none of the variables studied could predict
occurrence of MR after BMV.
Elective Transradial Renal Interventions in
Indian Population
283
N Tanwar, S Shah, S Gupta, S Suryawanshi, K Thakkar,
A Desai, N Vayada, H Malhotra, A Ranjan, T Patel
Traditionally, percutaneous renal intervention (PRI) is
usually performed either through the femoral or brachial
artery approach. Transradial approach (TRA) for coronary
procedures is now well established, due to lack of major access
site complications. However, its clinical applicability for PRI is
limited. We report our experience (from January 2004 to May
2005) of elective PRI utilizing the TRA. In 35 patients with
hemodynamically significant unilateral renal artery stenosis
(mean diameter stenosis, 88.4%±8.6%; right, n =14; left, n
=21), PRI was performed using left (n=30) or right (n=5) radial
artery access. None of the patients had contraindication for
femoral approach. The indications for PRI were uncontrolled
hypertension in 51.4% (18/35), renal impairment in 42.8%
(15/35), and flash pulmonary edema 5.8% (2/35). Ostial
involvement was present in the majority (82.8%, 29/35 cases),
while others had proximal lesion. After engagement of the
renal artery ostium with a guiding catheter, the stenosis was
crossed with a 0.014" percutaneous transluminal coronary
angioplasty (PTCA) guidewire followed by stent implantation
or balloon dilation. Guiding catheters used were Judkins right,
Multipurpose and Patel right. The majority were 6 F in size
and had standard length. Direct stenting was successfully
performed in 74.3% (26/35) cases. Pre-dilation was required
in 29.7% (9/35) cases. In 8 (22.8%) patients, optimal stent
expansion was achieved by additional post-dilation. Majority
(94.3%, 33/35) of vessels were stented and remaining 2 vessels
had cutting balloon angioplasty. Mean stent length was
16.6±2.1 mm (range: 12-18 mm); mean stent diameter was
5.8±1.4 mm (range: 4.0-8.0 mm). Peripheral stents (Genesis:
22, Express SD: 4, AVE Bridge: 2) were used in the majority; in
remaining patients, coronary stents were used (Propass: 1, S7:
2, Driver: 2). Average deployment pressure was 11.2±2.6 atm.
Angiographic success (residual stenosis <30%) was achieved
in all cases. There was no cross over to the femoral route. There
were no peri-procedural complications. Minor complications
(pain, spasm and minor hematoma) were seen in 2 (5.7%)
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patients. Immediate mobilization was possible in all patients.
Clinically, blood pressure control was improved in 11 patients
with a significant reduction in systolic and diastolic blood
pressure values. Serum creatinine values dropped from
1.81±0.3 mg/dl to 1.49±0.3 mg/dl. The availability of refined
hardware (0.014" guidewire-based low profile balloons and
balloon expandable stents, wide lumen guide catheters and
long equipment) has played a big role in success of TRA. Thus,
present equipment allows stenting of renal arteries of up to 8
mm with the use of 7 F guiding catheters. The left TRA is
preferred as there is no need to traverse the arch of aorta and
it is easier to enter the descending aorta. To conclude, PRI
through TRA is technically feasible, safe and associated with
to be a good alternative entry site for PRI.
Are Distal Protection Devices Underutilized
in Peripheral Vascular Interventions?
284
M Ramanathan, G Venkatesh, G Vignesh, CJ Reddy,
Mahesh Babu, N Kannan, KN Reddy,
Y Vijayachandra Reddy
Distal protection devices are being used extensively in
carotid stenting and its usage has been extended to renal
interventions as well. The use of distal protection devices in
peripheral vascular interventions has not been mentioned in
the literature. We have come across some cases of distal
thromboembolism during peripheral vascular interventions in
thrombotic lesions of superficial femoral artery (SFA). This
situation was seen in plain balloon angioplasty of SFA lesions
in diabetic patients presenting with lower limb ischemia and
distal atheroembolism. We proceeded to use distal protection
devices in 2 such cases to preempt this complication. We have
used Filter - EZ wires (Boston-Scientific, USA) in 2 cases of
peripheral intervention in diabetics presenting with lower limb
ischemia and distal embolism clinically suggested by multiple
toe gangrene with interspersed normal areas. The first patient
had critical external iliac stenosis and the second had popliteal
stenosis with thrombotic lesions on angiography. In both the
cases, the Filter - EZ wire was placed in the popliteal artery.
Medronic SE 9×37 mm stent was used for iliac stenosis and
plain balloon angioplasty was done for the popliteal artery. In
both the cases, good chunk of plaque/thrombotic tissue (3 mm)
was caught in the filter. These cases exemplify the role of distal
protection device in specific situations of peripheral vascular
intervention to prevent distal embolization. Positive catch of
good chunk of material highlights the potential complication
of the distal embolization, if the distal protection devices were
not used.
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Access Site Complications of Retrograde
versus Antegrade Common Femoral Puncture 285
– A Comparative Study
G Venkatesh, R Ravikumar, M Ramanathan,
P Susheel Reddy, B Kanagesh, G Vignesh,
C Jayarama Reddy, KN Reddy, Y Vijayachandra Reddy
While most peripheral interventions can be carried out by
retrograde femoral artery puncture approach (ipsilateral or
contralateral cross over techniques), special situations need
ipsilateral antegrade femoral approach. The usual problem has
been higher incidence of access site complications with
antegrade femoral approach. We routinely use antegrade
approach in popliteal and infratibial angioplasty and some
cases of chronic total occlusion of distal superficial femoral
artery. We analyzed the access site complications of antegrade
common femoral puncture compared to the routine retrograde
common femoral puncture. Twenty-five patients who
underwent antegrade common femoral puncture for
superficial femoral artery popliteal and infra tibial angioplasty
with age ranging from 40-62 years were analyzed. Common
femoral puncture was done by modified Seldinger technique
under fluoroscopy guidance. The sheath used was 7 F in 15
patients and 8 F in 10 patients. 5000 units heparin was given
for the procedure. The sheath was removed once the ACT was
< 150 s (2-5 hours post-procedure). Tight compression
bandage was applied after manually compressing the site for
45 min. Three patients developed minor hematoma. No
patients had pseudoaneurysm or atrioventricular (AV) fistula.
We compared this to the standard retrograde femoral puncture
groups which had a hematoma incidence of 4% and
pseudoaneurysm incidence of 0.2%. Careful puncture with
fluoroscopy guidance avoiding multiple pricks and excessive
anticoagulation and good post-procedure hemostasis
contribute to an extremely low rate of access site complication
in antegrade common femoral puncture.
Immediate Outcome of Peripheral Vascular
Intervention
286
DK Baruah, NK Panigrahi
Seventy cases of peripheral vascular disease (PVD) were
treated by percutaneous method from May 1999 to October
2004. Symptoms, risk factors and angiograms of all cases were
analyzed. There were 44 (62.8%) male and 26 (37.1%) female
with mean age of 51.2 years (range: 18-80 years). Risk factors
analysis revealed diabetes in 19 (27.1%), hypertension 39
(55.7%), smoking 7 (10%), chewing tobacco 3 (4.2%) and
hyperlipidemia in 2 (1.4%); 33 (47%) cases presented with
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limb ischemia and out of that 25 (35.7%) had acute ischemia
of either upper or lower limb; 23 (32.8%) cases of renal
angioplasty presented with hypertension. Distribution of
treatment in different parts of vascular system is as follows:
aorta 2 (2.8%), renal 23 (32.8%), iliac 13 (18.6%), femoral 7
(10%), popliteal 5 (7.1%), tibial 1 (1.4%), carotid 2 (2.8%),
subclavian 5 (7.1%), inferior vena cava (IVC) plasty 4 (5.7%),
IVC filter 3 (4.2%), subclavian vein plasty 1 (1.4%) and coil
embolization 5 (7.7.%). Lower limb interventions were carried
out by ipsilateral, bilateral or contralateral approach. In two
cases femoral artery was punctured in antegrade direction for
popliteal and tibial angioplasty. Other approaches used were
radial and brachial. Total 54 stents were deployed. Out of 33
cases of limb ischemia 10 (33.35%) cases had percutaneous
transluminal angioplasty (PTA) and thrombolysis, 8 (24.2%)
had only thrombolysis and 15 (45.5%) had PTA with stenting;
3 (4.2%) cases were treated with cutting balloon angioplasty;
4 (5.7%) cases underwent simultaneous coronary angioplasty.
Immediate results were analyzed. There were 2 (2.8%) deaths,
2 cases had groin hematoma and in 1 case the lesion could
not be crossed. One patient had to undergo partial amputation
(great toe) in spite of PTA to tibial artery. In one case the coil
was embolyzed and retrieved subsequently. In conclusion,
peripheral vascular intervention has become an important
alternative to surgical treatment, specially for limb ischemia.
Generally dedicated interventional radiologist performs
peripheral vascular interventions in most of the centers. In
their absence interventional cardiologist has to perform
various vascular interventions and in our centre we had
acceptable immediate results.
Routine Transesophageal Echocardiography
Before Percutaneous Transvenous Mitral
Commissurotomy
287
S Banerjee, BP Chatterjee, D Roy, P Sahoo
Kolkata
Sixty-eight
consecutive
patients
underwent
transesophageal echocardiography (TEE) before elective
percutaneous transveous mitral commissurotomy (PTMC) on
the day of procedure. The mean age of the patients was 32±5.6
years: male: 23, female: 45. Dense spontaneous echo contrast
was seen in 36 patients. All of them had a mean gradient of
more than 15 mmHg. Quantification of mitral regurgitation
(MR) was further confirmed after TEE. In 6 patients, more than
grade I MR was found which was not seen in TEE. All of them
underwent successful PTMC without increase in severity of
MR. Two patients had transient ischemic attack (TIA) following
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PTMC despite absence of clot in TEE. In three patients, the valve
score was properly assessed after TEE. Interatrial septal (IAS)
aneurysm was found in two patients. IAS puncture was
difficult in these two cases. Patent foramen ovale (PFO) was
observed in five patients (it did not affect the IAS puncture). To
conclude, routine TEE is recommended in all cases awaiting
elective PTMC. Whether it additionally decreases the chance
of complications is not addressed in this study, but the severity
of stenosis can be better assessed by TEE. The correlation
between mean diastolic gradient (MDG) across mitral valve and
spontaneous echo contrast was observed and better
delineation of IAS anatomy was feasible.
Is Percutaneous Transvenous Mitral
Commissurotomy Effective by the Inoue
Method in Patients with Restenosis after
Surgical Commissurotomy?
288
MA Rahman, T Haque, A Khan, M Ahmed,
SAM Husnayen, M Rashid, S Alam, ATM Shah,
AFM Khabiruddin, M Rahman
National Institute of Cardiovascular Diseases, Dhaka, Bangladesh
The percuteneous transvenous mitral commissurotomy
(PTMC) has been reported to be less good in patients with prior
surgical commissurotomy (CMC). The purpose of this study
was to evaluate the immediate results of PTMC with restenosis
after CMC and compare these with that of patients without
CMC. Between 2002-2004 we performed 210 cases of PTMC
by Inoue method. Of these, 34 (79.06%) women and 9
(20.94%) men; mean duration of performing PTMC was
7±3.2 years after CMC (Group 1) and 167 patients (143
(85.6%) women and 24 (14.4%) men), without prior CMC,
(Group 2). Younger subjects were present in Group 2. Female
patients constitutes majority of patient in both the group.
Wilkins’s echo score were comparable between the two groups.
Before PTMC, mitral valve area (MVA) and transmitral gradient
were similar in both groups. MVA 0.78±0.14 cm2 in Group 1
and 0.79±0.12 cm2 in group 2 (p>0.05), mean transmital
gradient 21.79±5.27 mmHg in group 1 and 23.05±6.42
mmHg in Group 2 (p > 0.05). After PTMC, MVA was increased
to 1.79± 0.31 cm2 in Group 1 and 1.86±0.28 cm2 in Group 2
(p>0.05) and mitral gradient was decreased to 6.26±1.95
mmHg versus 6.50±2.06 mmHg (p>0.05). MVA increase
significantly and transmitral gradient reduce significantly after
PTMC in both groups (p<0.001). PTMC by Inoue balloon
method in patients with restenosis after CMC is an effective
method of treatment that can help avoid valve surgery.
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Indian Heart J 2005; 57: 490–494
490 Congenital Heart Disease
Coil Closure of Patent Ductus Arteriosus
without Arterial Puncture
289
KM Krishnamoorthy, T Titus, S Sivasankaran,
KKN Namboodiri, G Sriram, JA Tharakan
Sree Chitra Tirunal Institute for Medical Sciences and Technology,
Thiruvananthapuram
Coil closure of patent ductus arteriosus (PDA) is generally
done through the venous route and documented by retrograde
descending aortic angiography. We describe our experience
with coil closure of PDA without arterial puncture in a large
cohort of patients. Between 2000-2005, 303 patients
underwent coil closure of PDA. Retrospective analysis was
done of those who had closure of PDA without arterial
puncture. There were 108 patients (45 males, 42%), mean age
3.9±5.1 years (range: 10 months - 36 years). Closure was done
through venous route using single coils or bioptome-assisted
delivery of multiple coils. Decision to avoid arterial puncture
was based on operator preference, presence of good ampulla
and the availability of echocardiography. Three patients who
crossed over to need arterial puncture were not included. Mean
left-to-right shunt ratio was 1.49±0.66 L/min. Mean size of
PDA was 2.47±0.69 mm (range: 2 mm - 4.1 mm). Clear
landmarks for coil deployment with fluoroscopic guidance
were available. Echocardiographic monitoring of residual flow
was performed at the end of procedure. Pulmonary artery
mean (PAM) pressure averaged 16.1±3.2 mmHg. Mean
number of coils used was 1.4±0.6. Seventy-three (69%)
patients required 1 coil; 24 (22%) required 2 coils; 11 (10%)
required 3 coils. Auscultation and echocardiography were used
to assess closure at the end of procedure. Twelve patients had
mild residual flow at end of procedure. All of them resolved at
3 months follow-up. There was no instance of limb ischemia.
There were no other periprocedural complications.
Obstruction to left pulmonary artery or descending aorta was
not seen in any patient by echocardiography. During the early
period (2000-02), 114 patients had coil closure; 26 (23%) of
them had no arterial puncture. During the later period, this
figure was 82 (42%) among the 189 coil closure patients
(p<0.001). PDA size in the earlier period was 2.2±0.35 mm
while it was 2.8±0.43 mm in the later period (p<0.002). Mean
age of the patients in the earlier period was 6.7±5.9 years while
it was 3.1±2.7 years in the later period (p<0.04). PAM pressure
was 14.2±2.8 mmHg in the early period and 17.5±5.3 mmHg
in the later period (p<0.01). To conclude, coil closure of PDA
is safe and effective without arterial puncture in most of the
patients. Clear landmarks for deployment, good ampulla and
echocardiographic monitoring should be available. As the
learning curve improves, more number of patients, larger
ducts and those with higher pulmonary artery pressure are
being considered for coil closure without arterial puncture.
Avoiding arterial puncture saves time and cost and reduces
vascular complications.
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Is Computerized tomographic Angiography
Superior to Cardiac Catheterization in
Evaluation of Congenital Heart Disease
290
Manisha Chakrabarti, S Radhakrishnan, S Shrivastava,
KS Iyer, Poonam Khoorana, Monika Agarwal
To assess the diagnostic accuracy of multislice
computerized tomographic angiogram (CTa) in management
of congenital heart disease, CTa was performed in 65
consecutive patients of congential heart disease (CHD) where
echocardiographic data was inadequate for surgical fitness.
Patients were classified as follows: tetralogy of Fallot (TOF):
25; ventricular septal defect (VSD) pulmonary artery (PA)
collaterals: 17; single ventricle (SV) physiology: 8; arch
anomalies; 7; peripheral pulmonary stenosis (PS): 2; partial
anomalous pulmonary venous connection (PAPVC)/total
anomalous pulmonary venous connection (TAPVC): 3; others:
3. Initial 22 patients underwent both cardiac catheterization
(Cath) and CTa. Subsequent 30 patients were evaluated preoperatively only by CTa. Surgical confirmation was used as the
reference standard. 13 patients who underwent CTa were
advised medical follow-up. Of 22 patients who underwent both
catheterization and CTa, 17 had no discrepancy between
catheterization, CTa and surgery. In 4 patients pulmonary or
arch anatomy were not very clear by cardiac cath but was
properly delineated by CTa. In one patient, CTa could not profile
collaterals clearly which were profiled by cath. The sensitivity
of CTa was found to be 98.4%, cath 81.8%. Of 30 patients
who underwent CTa only, 3 patients needed cath; one due to
inadequate image, one to obtain pressure data, and the other
for coil-embolization. In all patients the findings correlated
with that of surgery. Efficacy in this group was 96.6%. Also,
management became easier in the last group (n=10) due to
excellent anatomical profile. It is concluded that CT
angiography can be an acceptable alternative to cardiac
catheterization in pre-operative diagnostic assessment and
post-operative follow-up.
A Review of Electrocardiographic Features in
291
Tetralogy of Fallot in Indian Patients
V Reeta, K Deepak, V Keshavamurthy, S Madhu,
B Barooah, PK Dash
The pre - and post-operative electrocardiographic features
in relation to the anatomic and hemodynamic features of 340
consecutive patients who underwent corrective surgery for
tetralogy of Fallot (TOF) in our Institute from 2001-2004 were
analyzed retrospectively. The following ECG parameters were
noted - PR and QRS durations, P wave and QRS axes, QRS
morphology and amplitude of R wave in V1 and V6, presence
or absence of T wave inversions in V1, presence of right atrial
enlargement, and the presence of abrupt transition of R from
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V1 to V2. The anatomic and hemodynamic features noted were
the location of the ventricular septal defect (VSD), the presence
of major aortopulmonary collaterals (MAPCAs) and the
severity of the right ventricular outflow tract obstruction on
echocardiography. There were 208 male and 132 female
patients, the mean age of was 10.7±6.5 years. Right atrial
enlargement was present in 46.2% of cases. First degree AV
block was found in 1.8%. Tall R wave was seen in V1 in all cases.
An abrupt transition from V1 to V2 was seen in 75% of patients.
All patients had right axis deviation. The mean pre-operative
and post-operative QRS durations were 80.9±11.4 ms and
115±14 ms, respectively. The mean R wave amplitude in V1
and V6 was 13.9±7 mm and 8±4 mm, respectively. A qR
morphology in V6 was seen in 45.2%, RS in 5.9% and rS
pattern in 49%. The T wave in V1 was inverted in 52.6% of
cases. Complete heart block occurred in 1.2% of our patients
post-operatively, while 35.6% developed complete right bundle
branch block (RBBB), 50.6% developed incomplete right
bundle branch block (RBBB) and 11.8% did not develop any
degree of RBBB. One patient each developed atrial fibrillation,
multiple VPCs and Mobitz type II 2nd degree AV block. Two
post-operative patients required permanent pacemaker
implantation; 90.9% of the VSDs were perimembranous, 0.6%
had associated inlet extension and 8.3% had outlet extension.
The average right ventricular outflow tract (RVOT) gradient
was 83±17.5 mmHg pre-operatively. MAPCAs were found in
13.2% patients on aortogram. The vast majority of our
patients had the classically described features of TOF, like tall
R in V1, right axis deviation of QRS and abrupt transition from
V1 to V2. However a higher percentage (46.2%) of patients were
found to have right atrial enlargement, being equally
distributed over the pediatric and the adult population. The
QRS axis remained rightward despite the presence of inlet
extension of the VSD. A significant correlation was found
between the presence of MAPCAs and the amplitude of R wave
in V6 (p=0.01). In summary, ECG is a useful initial tool in the
evaluation of patients with TOF. Tall R waves in V6 are a pointer
toward presence of MAPCAs. There is no significant
correlation between the amplitude of R wave or T inversion in
V1 and severity of RVOT obstruction.
January 2005 to June 2005, a total of 58 patients with various
congenital heart diseases (CHD) undergoing catheterization
studies, aged upto 12 years were included in the study group.
The CHDs were: ostium secundum atrial septal defect (OSASD):
13, total anomalous pulmonary venous connection: 3, ostium
primum ASD: 2 ventricular septal defect (VSD): 12, patent
ductus arteriosus (PDA): 11, tetralogy of Fallot (TOF): 11,
triology of Fallot: 3, ASD plus VSD: 3. Echocardiograms and
DTI were performed in all of them using an Agilant Sonos
5500 (Philips) machine. TAPSE was determined in apical fourchamber view. A value of <1.5 cm was considered abnormal.
RV ejection fraction (EF) was calculated from apical 4-chamber
view and subcostal 4C view using the Simpson's rule. (End
diastoic volume-End systolic volume/End diastolic volume). A
value of <50% was considered abnormal. DTI was performed
in apical 4C view (high frequency filters, Nyquist limit <30
cm/s, minimal gains). MPI was calculated as follows:
Isovolumic contraction time+Isovolumic relaxation time/
ejection time. A value <0.40 was considered abnormal. All
patients subsequently underwent catheterization studies. All
the indices revealed RV dysfunction in all the three cases of
triology of Fallot and in an older child with TOF. In two patients
with VSD and pulmonary hypertension, in one patient with
PDA and bi-directional shunt, in two patients with ASD and
VSD, RVEF was normal by Simpson's rule and TAPSE was
normal. But these patients had abnormal RV global function,
as assessed by TDI (MPI > 0.40). These patients also had
elevated RV end-diastolic pressures on right heart
catheterization. The three patients with triology of Fallot
underwent percutaneous balloon pulmonary valvuloplasty
successfully. After 3 months of follow-up, RV function has
normalized on repeat Echo assessment in all three patients.
Study limitations include small number of patients and the
load and heart rate dependency of RV function was not
accounted for. We conclude that compared to the assessment
of RVEF by Simpson's method, TAPSE and DTI indices such as
MPI are easy to obtain and are reproducible. A TAPSE of <1.5
cm correlates well with RV systolic dysfunction. As MPI
integrates isovolumic and ejection phase indices, it is the earlier
and more sensitive indicator of RV dysfunction, before RVEF
becomes abnormal.
Assessment of Right Ventricular Function in
Congenital Heart Disease: Correlation
between Various Echocardiographic Indices
Isolated Subvalvular Pulmonary Stenosis –
Clinical and Hemodynamic Profile
292
293
CV Aruna Valli, IBV Lakshmi, CN Manjunath
P Kothari, AG Narayanaswamy, KG Sundar Kumar,
G Sudarsana
Sri Jayadeva Institure of Cardiology, Bangalore
Assessment of right ventricular (RV) function is
challending, due to the complexity of RV chamber geometry
and because of the load dependency of RV function. The aim
of our study was to examine the correlation of RV function
assessment by Simpson's method with tricuspid annular plane
systolic excursion (TAPSE) and myocardial performance index
(MPI) or Tei index by Doppler tissue imaging (DTI). From
Isolated subvalvular pulmonary stenosis is a relatively
uncommon condition, it comprises 1.5 - 10% in various series.
The obstruction may be at infundibular or subinfundibular
level. The aim of this study was to retrospectively analyze the
clinical and hemodynamic profile of these patients. From 1979
to 2004, 5800 patients with congenital heart disease had
undergone cardiac catheterization at our institute. Of these
491
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27 had isolated subvalvular pulmonary stenosis and 150 had
isolated valvular pulmonary stenosis. Their mean age was 22.5
years (range: 6-64 years) and 15 ( 55%) were males.
Presenting symptoms were dyspnea: 19 (70%), palpitation: 12
(44%), syncope: 12 (44%) and recurrent respiratory tract
infection: 10 (37%). Clinically all had ejection systolic murmur
and signs of right ventricular hypertrophy. ECG showed “P”
pulomonale in 6 (22%) with QRS axis > +60° in 22 (81%)
and right ventricular hypertrophy in 14 (52%) patients. Chest
X-ray showed cardiothoracic (CT) ratio > 50% in 20 (74%)
and enlarged main pulmonary artery (MPA) in 8 (30%)
patients. On cardiac catheterization, 9 patients had mean right
atrial pressure (RAP) > 8 mmHg (33%). Mean right
ventricular (RV) systolic pressure 115 mmHg (range: 40-220
mmHg). Twelve (44%) patients had supra systemic RV systolic
pressure. Left ventricular (LV) angiogram showed
interventricular septum (IVS) aneurysm in 5 (18%) patients.
The level of obstruction was infundibular in 18 (67%) and
subinfundibular in 9 (33%) patients. To conclude, in this small
series males predominate, dyspnea was the commonest
symptom, features suggestive of pre-existing shunt at
ventricular level noted in 1/3 and RV supra systemic pressure
in 44% of cases.
Single Center Experience of Double Outlet
Right Ventricle Patients Requiring Single
Ventricular Repair
294
Charanjit Singh, Harminder Singh, Satish Mishra,
Manoj Luthra, A Banerji, N Aggarwal, P Bharadwaj
Double outlet right ventricle (DORV) is usually amenable
to biventricular repair. DORV may be associated with certain
complex features, which may preclude biventricular repair and
make Fontan procedure a preferred modality with better
outcome. Complex anatomic features which favor single
ventricular repair include atrioventricular septal defects
(AVSD), inlet ventricular septal defect (VSD), straddling of one
of the AV valves, multiple VSDs, and hypoplasia of one of the
ventricles. We retrospectively analyzed all our cases of DORV
undergoing single ventricular repair from 2003 to 2005 to
see which factors prevented bi-ventricular repair. DORV was
defined as origin of one great vessel along with >50% override
of the other great vessel from right ventricle (RV) and presence
of bilateral conus. We identified 12 cases of DORV (4 males, 8
females; age range: 8 months-5 years) who were subjected to
single ventricular repair. All patients presented with cyanosis
and failure to thrive since birth. Echocardiographic features,
which prevented bi-ventricular repair, included AVSD (6 cases),
multiple VSDs (4 cases) and hypoplasia of left ventricle (LV) (2
cases). Four cases had straddling of AV valve as well (2 with
AVSD and 2 with multiple VSDs). Associated pulmonary
atresia was seen in 2 cases and severe infundibular and
valvular pulmonic stenosis (PS) in 8 cases. Only 2 cases had
no PS, both of which underwent pulmonary artery (PA)
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banding as initial treatment. Surgery performed included
bidirectional Glenn (BDG) in 11 patients of which 4 were
bilateral BDG. Two cases needed ligation of Blalock Taussig
shunt performed earlier. One patient underwent total
cavopulmonary anastomosis as a single stage procedure. Four
others underwent completion of extracardiac Fontan
procedure subsequently. We conclude that reason to offer
single ventricular repair in DORV is related to the morphology
of the VSD in most cases at our centre, AVSD being the
commonest.
A Rare Case of Criss-Cross Heart with
295
Corrected Transposition and Ebstein’s
Anomaly of Left-Sided Atrioventricular Valve
RPS Bhardwaj, Mohd Ahmad, CM Varma, J Rajagopal,
Gajinder Goyal, Subrat Akhoury, Suvir Gupta
An apparently healthy, athletic 20-year-old male, was
referred to our hospital with recent onset dyspnea and cyanosis
on exertion. On enquiry, his mother recollected cyanosis at
birth, which had disappeared by 6 months of age. Her clinical
examination revealed raised jugular venous pressure (JVP),
cyanosis, and a pansystolic murmur at the apex and an
unremarkable 2nd heart sound. Chest X-ray showed situs
solitus with mild cardiomegaly and prominent aortic knuckle
and ascending aorta. Echocardiography revealed
anteroposterior relationship of the atria with criss-crossing of
the jets from the anteriorly placed right atrium (RA) to the
posteriorly placed right ventricle (RV) and from left atrium (LA)
to anteriorly placed left ventricle (LV). There was a large perimembranous ventricular septal defect (VSD) (1.4 cm). RV gave
rise to an L-posed, anteriorly placed aorta and LV to pulmonary
artery, which was larger and had multiple septations/bands
above the valve, but with no significant gradient. The septal
leaflet of the left (tricuspid) atrioventricular (AV) valve was
grossly displaced downward producing atrialization of LV and
also a severe regurgitation. Catheterization was planned but
the patient had sudden cardiac death due to an unknown cause
just before planned admission. Criss-cross heart is a rare
anamoly in an adult and it may have normally related or
transposed (D or L type) vessels. Review of literature does not
show any mention of this combination of criss-cross heart, Ltransposition and a left-sided (posterior) Ebstein’s
malformation.
Rotational Digital Angiocardiography in
Congenital Heart Disease : Initial Single
Centre Experience
296
S Thanvi, S Dani, J Prajapati, S Jain, H Joshi, S Ghosh,
K Sharma, JM Shah, HJ Shah, A Jain, T Madan
Angiocardiography in congenital heart disease (CHD)
poses the challenge of extensive variance in anatomical
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Congenital Heart Disease 493
relationships. Fixed-angle projections and limitations of
contrast dose may often lead to an incomplete study. Rotational
angiocardiography (RACG) provides enhanced visual
information, and has been shown on single-plane systems to
provide savings in contrast volumes and radiation dose. We
tested RACG at our center on InnovaSpinTM (GE Innova 2000,
Milwaukee, WI) to ascertain the clinical benefits of the
technique on a variety of older children with CHD (n=16),
Mean age of patients requiring diagnostic angiography was
9.6 years. The patient population included those with
ventricular septal defect (VSD) (n=2), tetralogy of Fallot (TOF)
(n=6), TOF with absent pulmonary valve (n=1), corrected
transpostion of great vessels (CTGV) (n=1), double outlet right
ventricle (DORV) (n=2), hemitruncus (n=1), aorto-cameral
fistula (n=1), supravalvular aortic stenosis (n=1) and
persistent truncus arteriorus (n=1). RACG provided us with a
clear and dynamic definition of cardiac anatomy as well as
relationships with a single contrast injection allowing for
quantification of lesions in several projections. Significant
contrast media (0.75 ml/kg/patient) and radiation dose
savings were seen. The main benefits being the vivid
demonstration of pulmonary artery anatomy; relationships
and course of great arteries; semilunar- atrioventricular (AV)
valve discontinuities and elaboration of conal tissues and the
course of coronaries, shunts and patent ductus arteriosus
(PDA). Rotational angiocardiography is thus a promising
alternative to bi-plane angiography and a useful option in
centres with a single plane cardiac catheterization laboratory
that can be shared by adult as well as pediatric patients .
Crochetage Sign: A New Independent
Electrocardiographic Sign of Atrial Septal
Defect
297
Ajay Kumar Sinha, BP Singh
Magadh Hospital and Indra Gandhi Institute of Medical Sciences,
Patna
Crochetage sign is basically a notch near the apex of R wave
in inferior leads (II, III and aVF) of surface electrocardiogram
(ECG). The aim of our study was to substantiate the diagnostic
role of this sign in atrial septal defect (ASD) of secundum type.
We selected cases attending our institute. Sixty cases of ASD
secundum type were studied. All the cases were subjected to
12-lead ECG and echocardiography and also the color Doppler.
Crochetage sign was found positive in 90% of ASD compared
to 10% of other congenital heart diseases and 13.3% of
acquired heart disease. This sign was positive in 4% of isolated
right bundle branch block (RBBB) and only 2% of control
group. Cases of ASD with negative sign had a small shunt.
Pulmonary arterial pressure did not affect this sign. Six cases
were followed up after ASD closure and it revealed
disappearance of this sign. It is concluded that Crochetage sign
on surface ECG is a valuable sign of ASD and positivity depends
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on size of ASD and significant left-to-right shunt irrespective
of pulmonary arterial pressure.
Echocardiographic Study of Truncus
Arteriosus
298
H Bajaj, S Sreenivasan, B Thakkar, C Lanjewar, H Shah,
Cases of truncus arteriosus constitute 2-3% of congenital
heart defects. A review of 8300 echocardiograms performed
during the past 9 years in our institution in patients with
congenital heart disease revealed truncus arteriosus in 47
(0.6%) patients. A majority of patients were male (72%) and
the mean age was 2.5±1.0 years (range: 6 days -19 years).
Type I truncus arteriosus was the most common (87%), Type
II (4%) and Type III (9%) were infrequently seen. Generally,
SDX subset was seen (98%). One patient belonged to AXX
subset. Subtruncal ventricular septal defect (VSD) was large
and non-restrictive in all patients except one. Truncal valve
(TV) was quadricuspid in a majority (64%) of the patients;
tricuspid (29%) or bicuspid (7%) valve was present in the
remaining patients. Regurgitation of the TV was present in
65% of the patients, reported as mild in 36%, moderate in 25%
and severe in 4%. Occasionally (4%) a stenosed truncal valve
was found. An overwhelming majority (90%) had developed
pulmonary hypertension at presentation. However,
pulmonary stenosis was uncommon (5%). Left pulmonary
artery could not be seen in 8% of patients. Two patients had a
patent ductus arteriosus (PDA). Associated anomalies included
a left superior vena cava in 2 patients and an interrupted aortic
arch, tricuspid atresia, common atrium or a single ventricle in
1 patient each. A review of our echocardiographic database
suggests that truncus arteriosus is a relatively rare congenital
heart disease. Type I variety is predominantly found. The
truncal valve is commonly quadircuspid and is regurgitant in
two-third of the cases. Suboptimal delineation of pulmonary
arteries suggests the need of an additional imaging modality.
A Rare Case of Double Chambered Right
Ventricle Associated with Congenital Absence 299
of Pulmonary Valve
CM Varma, RPS Bharadwaj, Ramesh Thakur, J Rajagopal,
Subrat Akhoury, Suvir Gupta, Sarita Yadav
LPS institute of Cardiology, Kanpur
A double chambered right ventricle (RV) is a relatively
uncommon congenital cardiac defect in adults, characterized
by presence of anomalous muscle bundles dividing the RV into
a high pressure proximal chamber and a low pressure distal
chamber. It is reported to be associated with various other
anomalies, commonly ventricular septal defect (VSD),
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pulmonary valve stenosis (also reported with pulmonary valve
endocarditis) and a tetralogy of fallot (TOF) like or a double
outlet right ventricle (DORV) like physiology. We hereby report
the first case of double chambered RV associated with
congenital absence of pulmonary valve, causing severe low
pressure pulmonary regurgitation and leading to gross dilation
of main pulmonary artery and the distal RV chamber. The
patient, a 29-year-old multiparous woman was referred to our
hospital with long standing vague ill health, loss of appetitie
and recent onset mild dyspnea and pedal edema, with no
history suggestive of endocarditis in the past. Chest X-ray
showed massive cardiomegaly with a "Box-shaped heart". Twodimentional echocardiography clearly showed anomalous
muscle bundle within the RV, with an intra-cavity gradient of
70 mmHg. Tricuspid regurgitation jet (V-Max) was 4.8 ms. In
addition, the pulmonary valve leaflets were severely
hypoplastic, with only rudiments visible. Right heart
catheterization and hemodynamic studies confirmed the
echocardiographic finding, while left ventriculogram revealed
an additional small VSD. Surgery was deferred due to patient's
choice and she was nearly asymptomatic at one-year followup on optimzed decongestive therapy.
Role of Oral Sildenafil in Eisenmenger
Syndrome: Cardiac Catheterization Follow
up Study
300
Mukesh K Sharma, Naveen Garg, Sudeep Kumar,
Aditya Kapoor, Satyendra Tewari, PK Goel, Nakul Sinha
Eisenmenger syndrome (ES) is associated with severe
disability and poor prognosis. Presently, no safe and effective
therapeutic option is available except heart-lung
transplantation. There are only anecdotal reports of
therapeutic efficacy of sildenafil in these patients. Its effect on
various cardiac catheterization parameters is also not well
established. This study was conducted to evaluate the safety
and efficacy of oral sildenafil therapy in patients of ES. In this
ongoing study, we have studied 8 patients of ES [3 secondary
to atrial septal defect (ASD), 1 with ventricular septal defect
(VSD), 3 with patent ductus arteriosus (PDA) and 1 with
combined lesions; mail-female ratio: 5:3, mean age:
28.38±10.9 years, range: 13-45 years]. Two patients were in
NYHA functional class II while 6 were in NYHA class III (mean
NYHA class: 2.75±0.6). Baseline as well as echocardiographic
and cardiac catheterization study was performed in all patients.
Sildenafil was started at a low dose (6.25 mg thrice a day) and
was gradually increased upto a maximum dose of 300 mg/
day. Mean maximum dose achieved was 285±33.54 mg per
day (range: 225-300 mg/day). All patients tolerated the drug
very well and no major side effect was observed in any patient.
One patient reported rhinorrhea at 300 mg/day dose which
responded by decreasing the dose to 150 mg/day. No signficant
fall in blood pressure was noticed in any patient. At mean
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494
follow-up of 9.1±6.6 months (range: 6-18 months), functional
class improved by >1 class in all patients. Mean NYHA class
was improved from 2.63 to 1.23. Six-minute walk test distance
was improved significantly from 255.68±86.35 m to
399.8±73.15 m (p=0.001). Follow-up cardiac catheterization
revealed significant fall in pulmonary artery (PA) systolic
pressure (108.43±90.2 mmHg v. 98.8±11.5 mmHg), PA
diastolic pressure (47.57±12 mmHg v. 40.8±10.9 mmHg),
PA mean pressure (68.43±11.6 mmHg v. 58.4±11.4 mmHg)
with a significant fall in pulmonary vascular resistance (PVR)
[12.69±2.6 WU v. 6.5±3.1 WU (p<0.2)]. PVR: SVR ratio also
decreased from 0.520±0.278 to 0.284±0.128 (p<0.01). To
conclude, oral sildenafil therapy is safe, it improves functional
class and decreases pulmonary artery pressure and pulmonary
vascular resistance in patients of Eisenmenger syndrome.
Ebstein's Anomaly of Tricuspid Valve: An
Echocardiographic Profile
301
S Sreenivasan, K Satish, H Bajaj, B Thakkar,
A retrospective analysis of 8300 echocardiographic
evaluation of congenital heart disease (CHD) was done at our
hospital between 1995 and 2005. We reviewed the
echocardiographic profile of 148 (1.7%) patients who were
diagnosed to have Ebstein’s anomaly of the tricuspid valve.
Mean age was 26±5 years (range: 3 days to 40 years). The
septal tricuspid leaflet was displaced by <20 mm in 51 (35%)
patients, by 20-40 mm in 74 (50%) patients and >40 mm in
23 (15%) patients. Tricuspid regurgitation (TR) was present
in 123 (83 %) patients. Of these patients, 47% had severe TR,
28% had moderate TR and 25% had mild TR. Anterior
tricuspid leaflet was found to be mobile in 95 (64%) and
tethered in 53 (36%). Functional right ventricle (RV) was 3040% of total RV in 74 (50%) patients while it was <30% in 59
(40%) and >50% in 15 (10%) patients. Compromised RV
function was seen in 26 (18%) patients. Of these 12% patients
had mild RV dysfunction. Associated anomalies seen were:
ostium secundum atrial septal defect (ASD) in 51 (34%)
patients while 22 (15%) patients had a patent foramen ovale
(PFO). ASD was small to moderate-sized in 42 (82%) patients
and large in the rest of them. Right-to-left shunt across the
ASD/PFO was seen in 44% of the patients. Mitral valve
prolapse was seen in 5% with 20% of them having more than
mild mitral regurgitation. Corrected transposition of great
arteries was observed in 11 (16%) patients. Tricuspid stenosis,
aortic regurgitation, pulmonary atresia and coarctation of
aorta were seen in 1 patient each. Patent ductus arteriosus
(PDA) was found in 2 patients. Valvular pulmonary stenosis
was found in 4 patients and 11 (16%) patients had left
pulmonary artery hypoplasia. In conclusion,
echocardiography provides complete evaluation of Ebstein's
anomaly of the tricuspid valve and usually does not require
additional imaging modality.
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Pacing and Arrhythmias 495
Cryo-modified Maze in Patients with Atrial
Fibrillation undergoing Concomitant Cardiac 302
Surgery
K Sharada, G Usha Rani, NVN Verma, KV Raja Sekhar,
C Narasimhan
CARE Hospital, Hyderabad
Chronic atrial fibrillation (AF) persists in majority of
patients after correction of underlying structural abnormality.
Maze procedure is an effective surgical method to eliminate
AF. Maze incisions can be equally effective with various energy
modalities. Cryo energy has been shown to be superior to
radiofrequency and microwave energy lesions. In this study,
we used cryo energy to create lines of conduction block in left
atrium during cardiac surgery as a modification of maze III
procedure. Between October 2004 and June 2005, 12 patients
(6 males, 6 females, mean age 37 years) of chronic AF
underwent concomitant cardiac surgery. Mitral valve
replacement for rheumatic mitral valve disease was done in
11 and one patient underwent off-pump coronary artery
bypass graft surgery (OPCAB). Endocardial modified maze was
done in 11 and epicardial procedure in one patient. The
additional crossclamp time required for the AF ablative
procedure was 16±4 min. There were no periprocedural
complications because of cryo lesions. Eleven patients were in
sinus rhythm post-surgery and one patient who underwent
epicardial ablation converted to sinus rhythm in 3rd postoperative week. Over a mean follow-up of 5.6±3 months, all
patients are maintaining sinus rhythm on single
antiarrhythmic drug (amiodarone). Cryo-modified maze as an
adjunctive procedure is safe, economical, time-saving and
effective in eliminating chronic atrial fibrillation.
Pacemaker Implantation after Open-Heart
Surgery
303
KG Sundar Kumar, G Sudarsana, R Sriram,
AG Narayanswamy, A Ganesh
Transient conduction disorders are often encountered after
heart surgery. However, need for permanent pacemaker
implantation (PPI) is uncommon. We studied the incidence,
clinical profile and follow-up data of patients who needed PPI
following open-heart surgery. Retrospectively, the data of 3850
patients who underwent open-heart surgery for acquired and
congenital heart disease (CHD) from June 1992 to May 2005
were analyzed. Post-operative PPI was done in 43 (1.1%)
patients. Study population consisted of 51% male, age ranging
from 2 months to 68 years (mean 26.3 years). Indication for
PPI were complete atrioventricular (AV) block: 39 (90.6%),
sick sinus syndrome (SSS):3 (6.9%), and symptomatic
trifascicular block:1 (2.3%). Pre-operative conduction
disturbance was present in 4/43 (9.3%) patients. Considering
the type of surgery 14/656 (2.1%) of aortic valve replacement
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495
(AVR), 4/1135 (0.35%) of mitral valve replacement (MVR),
2/297 (0.67%) double valve replacement (DVR) and 23/717
(3.2%) of CHD patients had PPI. Among CHD patients, PPI
was done mainly following intracardiac repair for tetralogy of
Fallot (TOF)/double outlet right ventricle (DORV): 12/23
(52.1%). Other indications were post-operative corrected
transposition of great vessels (CTGV)/ventricular septal defect
(VSD): 4/23 (17.3%), isolated VSD closure:2/23 (8.6%), atrial
septal defect (ASD) closure: 3/23 (0.6%). Fontan surgery: 1/
23 (4.3%). PPI was done 9- 310 days after surgery. Follow-up
data is available for 33/43 (76.7%) patients with a mean period
of 31 months. In 32/33 (96.96%), conduction disorder
persisted on follow-up. Repeat procedure relating to pacemaker
was needed in 33% patients during follow-up. In conclusion,
need for PPI following open-heart surgery is uncommon. In
our series CHD was a more frequent indication than acquired
disease. Majority of patients persisted to have the conduction
disorder during follow-up.
Radiofrequency Ablation of Arrhythmias in
Pediatric Population
304
A Shah, S Mattummal, B Thakkar, A Nabar, D Narula,
We narrate our experience of the last 5 years, regarding
radiofrequency ablation (RFA) of arrhythmias in children <16
years. Among 929 RFA procedures performed in the last 5
years, 36 (4%) procedures were performed in children (mean
age: 12.4±1.3 years, 20 boys). RFA was performed for
supraventricular tachycardia (SVT) in 24 (66%) patients
[atrioventricular nodal reentrant tachycardia (AVNRT): 4, left
lateral accessory pathway (AP): 10, right-sided AP: 5, left
posteroseptal AP: 3, right posteroseptal AP : 2] and for stable
ventricular tachycardia (VT) in 12 (36%) patients [right
ventricular outflow tract (RVOT) VT: 6, fascicular VT: 6]. All
but 3 patients with SVT had a structurally normal heart. Two
out of the three patients with right-sided AP had Ebstein’s
anomaly while remaining 1 patient had an interrupted inferior
vena cava. Three patients with VT had a dilated
cardiomyopathy (DCM) [mean left ventricular (LV) ejection
fraction: 25%], while other patients had a structurally normal
heart. Prior to RFA calcium channel blockers (66%) were used
most commonly, followed by beta-blockers (24%) and
amiodarone (10%). Ablation was successful in all but one case
(97%). In one patient who had two morphologies of RVOT VT,
only one morphology could be induced and successfully
ablated. LV ejection fraction improved (>50%) at 3 months in
all the 3 patients with DCM following successful ablation. All
diagnostic as well as ablation catheters were introduced by the
femoral route using 6 F, 5 F and 7 F sheath in the descending
order of frequency. In only 1 patient, the internal jugular vein
was used for access. Left-sided AP ablation was performed
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496 Pacing and Arrhythmias
through transaortic approach using an ablation catheter with
a smaller curve. Our experience, though limited, suggests
feasibility and safety of RFA of arrhythmias in children, and is
comparable to the wide experience already available in adult
patient population.
Ablation of Supraventricular Arrythmias
Guided by CARTO Electroanatomical Mapping 306
S Mattummal, D Narula, A Shah, B Thakkar, A Nabar,
We present the results of CARTO electroanatomical
mapping and ablation (AB) of
supraventricular
tachyarrhythmias (SVT) performed at our centre. Between
August 2004 and January 2005, 6 patients (mean age:
30±13, year, range: 17-53 years, 3 men) underwent ablation
of symptomatic SVT. Procedural details are shown in Table.
No
Heart disease
SVT - ECG
(CL, ms)
SVT
mechanism
Ablation
site
Acute
result
Recurrence
Treatment of Incessant Ventricular
Tachycardia in Patients with Structural Heart 305
Disease
1
Normal
2 X failed AB
AVRT (280)
Right
lateral AP
Focal,
Epicardial
Successful
No
2
S/P ASD
patch closure
Atypical
AFL (250)
Focal
High RA
Not
successful
No
A Nabar, C Timmermans, S Phillipens, HJGM Crijns,
LM Rodriguez
3
ARVD, S/P
ICD
Inappropriate
shocks
Typical
AFL (400),
AT (410)
Macroreentry,
Focal
AFL isthmus,
high RA
Both
successful
No
4
S/P CMC
AT (370)
Macroreentry
LIPV-MA
Transient
success
>3
months
Academic Hospital Maastricht, The Netherlands
Radiofrequency ablation (RFA) may be the only therapeutic
option remaining for patients with incessant ventricular
tachycardia (VT). From a group of 146 patients with structural
heart disease (ischemic: 117, others: 29) who underwent RFA
of VT at our centre between 1991 and 2002, 13 patients
[8.9%, 65±14 years, 12 men, ischemic:11, right ventricular
[RV] dysplasia:2] underwent ablation of an incessant VT
(477±86, 360-600 ms). Despite intravenous amiodarone and/
or procainamide (n=12), repeated overpacing (n=7) and/or
external cardioversion (n=3), implantable cardioverterdefibrillator (ICD) therapies (shocks:3, anti-tachycardia pacing:
4) and intravenous sedation (n=3), 1 (n=11) or 2 (n=2), VT
morphologies [right bundle branch block (RBBB): 10, left
bundle branch block (LBBB): 5] were recurrent in every
patient. The mean left ventricular (LV) ejection fraction was
31±15%. The target clinical VT was incessant (n=10) or was
suppressed by procainamide infusion and required induction
(n=3). RFA was performed using entrainment criteria (n=3),
activation with/without pace-mapping (n=7) or the CARTO
electroanatomical mapping system (n=3). The target VT was
successfully ablated in the LV (n=3), RV (n=2), or on both sides
of the ventricular septum (n=1) in 10/13 (77%) patients after
a delivery of 5±4 pulses. In-hospital, 7 (54%) patients had no
(n=4) or only non-sustained VT (n=3) recurrences.
Recurrences of sustained VT required re-RFA (n=4), further
optimization of AAD therapy (n=1) or ICD implantation (n=1)
prior to discharge in the remaining 6 patients. After a followup of 22±18 months (range: 4-70 months), 4 patients had no
VT recurrences, 2 patients had received appropriate ICD
therapies, 1 patient underwent re-RFA and 6 patients had died
[heart failure (HF) in 4 patients, sudden death and intracranial
bleed in 1 patient each]. Our results suggest a moderate acute
procedural success (77%) of RFA in patients with incessant
VT. However, recurrences of VT and heart failure adversely
influence the long-term outcome.
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496
5
Normal
AT (350)
Focal
RSPV
Successful
No
6
Normal
AFL
reentry
Macro-
AFL isthmus
Successful
No
ARVD: arrhythmogenic right ventricular dysplasia; ASD: atrial septal
defect; AFL: atrial flutter; AT: atrial tachycardia; CMC: closed mitral
commissurotomy; LIPV: left inferior pulmonary vein; MA: mitral annulus;
RSPV: right superior pulmonary vein
Guided by the CARTO electroanatomical mapping system,
ablation was successful in 5/6 (83%) patients. In every patient
a minimum follow-up of 6 months was available. One patient
had recurrence of the ablated atrial tachycardia (AT) following
initially successfully ablation. In conclusion, CARTO
electroanatomical mapping allows a detailed understanding
of the mechanism of SVT and guides successful ablation.
Arrhythmogenic Right Ventricular Dysplasia:
307
A Comparative Study of Different Imaging
Modalities with CARTO-Based ElectroAnatomical Mapping
S Mattummal, D Narula, B Thakkar, A Nabar,
Arrhythmogenic right ventricular dysplasia (ARVD) is
morphologically characterized by fatty infiltration in the right
ventricular (RV) wall which can lead to RV dysfunction. In
some patients the left ventricle could be involved. Different
imaging modalities such as echocardiography, magnetic
resonance imaging (MRI) and angiocardiography can localize
the ventricular involvement. Bipolar voltage mapping (scar
defined as =0.1mV) performed using the CARTO electroanatomical mapping system can localize the scar and
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Indian Heart J 2005; 57: 495–511
consequently the dysfunctional and arrhythmogenic areas.
Four patients with ARVD who had recurrences of ventricular
tachycardia and were considered for ablation using the CARTO
electroanatomical mapping system were included in this study.
The results are tabulated.
No
SAECG
Echocardiography MRI scan
Angiocardiography
CARTOMapping
1
Normal
RV inflow
aneurysm
Low voltage scar RV inflow
2
3
Normal
Abnormal
4
-
Dilated RV. RV
free wall
hypokinesia.
Normal LV
function.
Normal
RV normal
Mild global
LV hypokinesia
RV+LV
hypertrophic
Extensive
dyskinesia
and fat
infiltration
RV infiltration
RV+LV
patchy infiltrate.
Focal RV aneurysm.
RV dilated,
Normal
sacculations
RV inflow scar
Extensive low voltage
areas in RV.
RV inflow, free wall
scar
308
Joy M Thomas, RV Sridhar, KM Cherian
International Centre for Cardiothoracic and Vascular Diseases,
Chennai
Percutaneous catheter radiofrequency (RF) ablation of
ventricular tachycardia (VT) has been found to an effective
and desirable modality of treatment in some types of VT.
Idiopathic ventricular tachycardia has been found to be
particularly amenable to RF ablation. Eleven cases of VT have
been treated by RF ablation in the past. They included right
ventricular outflow tract (RVOT) VT in 7 and idiopathic left
ventricular VT (ILVT) in 4. There were 9 men, and the mean
age was 33, with the youngest being 11 years and the oldest
62 years. The electrophysiological study (EPS) procedure was
done using a Prucka 4000 EP Lab, an EPT 1000 RF generator
and a Bloom stimulator initially and a Micropace stimulator
later. All the cases (100%) could be successfully ablated using
conventional methods: mapping the earliest ventricular
electrograms during tachycardia or, mapping the ventricular
premature depolarizations (VPDs) and pace mapping to
confirm. In one case ablated with the use of VPDs as endpoint;
the VT recurred after three months and successful RF ablation
was done in the second sitting. The later cases (5 cases) were
ablated using the unipolar signal from the RF ablation catheter
tip. The presence of an early ventricular negative signal with
a sharp initial deflection indicated the site of the successful RF
ablation consistently and with great accuracy. All the cases
done using unipolar mapping were successful and there was
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Baseline Characteristics, Electrophysiological
309
Findings, Immediate and Follow-up Results
of Radiofrequency Ablation of Accessory
Pathways - A Retrospective Analysis
Georgie Thomas, Ramdas Nayak, Praveen G Pai,
KU Natrajan, Prakash Kamath
Our results show that a combination of various imaging
modalities and the CARTO electro-anatomical mapping can
help to confirm the diagnosis of ARVD and evaluate the RV in
terms of dysfunctional -hypocontractile and arrhythmogenic
regions.
Radiofrequency Ablation of Ventricular
Tachycardia using Unipolar Ablation
Electrograms
no recurrence in this group. In conclusion, idiopathic VT can
be successfully treated by radiofrequency ablation using
conventional methods, sharpened by using the unipolar
electrogram in the RF ablation catheter.
A total of 170 patients (mean age: 39 years, range: 11-67
years; male-female ratio 1:2) underwent electrophysiological
(EP) study and attempted radiofrequency ablation (RFA) for
atrioventricular reentrant tachycardia (AVRT) from March
2000 to March 2005. Symptoms persisted for more than 2
years prior to referral in 82% patients and 8% underwent EP
evaluation within 1 year of onset of symptoms. A history of
cardioversion was available in 3% patients. Manifest preexcitation on surface ECG was seen in 87 (51%) patients. In
the EP lab orthodromic tachycardia was inducible in 88%
patients and the remaining had either antidromic tachycardia
or atrial fibrillation with pre-excitation. The location of the
accessory pathway (AP) was left lateral in 85 (50.3%), septal
in 36.7%), anteroseptal 7 (11.2%), mid septal 6(9.6%) and
posteroseptal 49 (79%), right free wall in 16 (9.4%) patients.
Six (3.5%) patients had a Mahaim pathway. Successful RFA of
the AP was achieved in 95% of the patients. The preferred
approach in our institute for left lateral AP was transseptal
which was done in 94% and the remaining 6% had retrograde
transaortic approach. Two patients had cardiac tamponade
requiring pericardiocentesis (one each during coronary sinus
(CS) cannulation and radiofrequency energy delivery). One
patient had uncomplicated pericardial entry during CS
cannulation. One patient had a frontal lobe infarction within
48 hours following a left free wall AP ablation. One patient
had associated coronary artery disease hence EP and RFA was
deferred. Two patients with mid/anteroseptal pathway opted
out of RFA due to high risk of complete heart block (CHB).
Attempts at RFA were unsuccessful in 6 (3.5%) patients. The
possible reason for the unsuccessful ablation in these patients
was: CS divert (n=1), oblique/broad/epicardial left
anterolateral pathway (n=1) and right free was AP with
catheter instability in 1, Ebstein's anomaly in 1 and Mahaim
fibres in 2. Out of 161 patients who underwent successful RFA,
3 (1.5%) patients had recurrence which required a second
ablation procedure. RFA can be achieved safely in patients with
AP with high success rates and low risk of recurrence. Right
free wall pathways, Mahaim fibres and associated Ebstein's
have a relatively higher risk of failure due to catheter instability.
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Radiofrequency Ablation for Atrioventricular
310
Nodal Re-entry Tachycardia –
A Follow-up Analysis
Ramdas Nayak, Georgie Thomas, Praveen G Pai,
KU Natarajan, Prakash Kamath
A retrospective analysis of 238 patients (female-male ratio
1:4) was undertaken who underwent radiofrequency (RF)
ablation from March 2000 to March 2005 90% of patients
had symptoms for > 2 years prior to referral for
electophysiological (EP) evaluation. 11.8% of patients required
hospitalization and intravenous (IV) medications/
cardioversion for termination of supraventricular tachycardia
(SVT). In the EP lab, typical atrioventricular nodal reentry
tachycardia (AVNRT) was induced in 97.9% of patients. In the
remaining patients the induced arrhythmia was atypical
AVNRT, 3 patients had both. Of the 238 patients, 235 (98.7%)
underwent successful RF ablation. Successful slow pathway
modification was done in 149 (62.6%) patients and 86 (37%)
patients had ablation of the slow pathway. The standard
practice in our institution for successful ablation is inability to
induce AVNRT with triple atrial extra stimulus protocol on
pharmacological provocation with isoprenaline. One patient
who earlier had atrial septal defect (ASD) surgical closure, had
failure due to dilated coronary sinus (CS) ostium as she also
had a left superior vena cava (LSVC) to CS. Two patients
preferred medical treatment in view of explained high risk of
complete heart block (CHB) due to possible anterior location
of slow pathway following procedural failure after ablation in
the posterior and mid septal locations. The procedure was
complicated by heart block in 4 patients. In 1 patient CHB was
transient, another had transient CHB which recovered to 2:1
AV block with a heart rate above 95 bpm. He underwent
permanent pacemaker implantation (PPI) after 3 months due
to effort intolerance. One patient with hypertrophic
cardiomyopathy received DDD pacemaker. The 4th patient did
not undergo PPI in view of a stable escape rhythm of >50 bpm
and asymptomatic status and has remained so after 24
months. One patient developed cardiac tamponade during CS
cannulation needing pericardiocentesis. One patient presented
with deep vein thrombosis after one week and required
anticoagulation. During follow-up, there was no clinical
recurrence of AVNRT in any of the patients who underwent
successful RF ablation. Acute cure of AVNRT with RF ablation
is high and during follow-up, had negligible or no recurrence
with minimal complications.
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498
Primary Ventricular Fibrillation – Clinical
Profile
311
S Shunmugasundram, Geethasubramanian, A Balaguru,
PS Mohanamurugan, K Meenakshi, G Gnanavelu,
S Venkatesan
Primary ventricular fibrillation (VF) during an acute
myocardial infarction (MI) occurs with a high incidence and
mortality rate in the pre-thrombolytic era. Its incidence and
characteristics in the current era is rarely reported. In this
context, we analyzed the relationship between primary VF,
infarct size and prognosis. We studied 22 consecutive patients
surviving acute MI and primary VF with a control population
of acute MI uncomplicated by primary VF. The following risk
factors were included in multivariate models to estimate their
importance for its incidence and 30-day prognosis: age, gender,
risk factors, Killip class, type of infarct, pulmonary edema,
cardiogenic shock and thrombolytic status. Primary VF was
seen in 22 of 450 consecutive patients (4.8%) admitted within
24 hours after the onset of acute MI. Compared with patients
without primary VF they showed a lower mean age group (age
46 years), male, non-smokers, a higher incidence of anterior
infarction, first MI and non-thrombolyzed state (14 without
streptokinase). 30-day mortality rate did not differ much
between the two study groups (9.0% v. 8.4%). Warning
ventricular arrhythmias preceded primary VF in only 28% of
cases [ventricular premature beat (R on T in 60%) and
ventricular tachycardia]. Primary VF occurred during or
immediately after thrombolytic therapy in 4 patients. One
patient had electrical storm which responded with beta-blocker
therapy. To conclude, primary VF is more common in young
population, those with first MI, anterior infarction and when
successfully treated does not alter short-term prognosis.
Syncope in the Setting of Ischemic Heart
312
Disease and Left Ventricular Dysfunction:
A Class I Indication for Internal CardioverterDefibrillator
Naushad, Shashidhar, Bagirath, Sunita Abraham,
Kannan, Ravi Kishore
Narayana Hrudayalaya, Bangalore
In the setting of ischemic heart disease (IHD) syncope is
considered as ominous symptom, and in few studies it has been
equated with aborted sudden cardiac death (SCD). Here, we
report 6 cases of recurrent syncope, who had IHD and left
ventricular (LV) dysfunction. All of them underwent
electrophysiological (EP) study and were found to have
inducible monomorphic ventricular tachycardia. They all
underwent implantable cardioverter-defibrillator (ICD)
implantation. In the follow-up ranging from 3 months to 1
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Indian Heart J 2005; 57: 495–511
year, 4 of them had received ICD shocks which were
appropriate. Thus, it may not be wrong to state that syncope
in the presence of IHD and LV dysfunction can be regarded as
class I indication for ICD implantation. However, this requires
further studies with larger number of patients, followed up for
a longer duration.
Accessory Pathway Radiofrequency Ablation
313
– Single Centre Experience
Md Azizul Haque, B Majumdar, D Mukherjee, M Panja,
Y Lokhandwala
From August 2002 to June 2005, 140 patients underwent
radiofrequency (RF) ablation for supraventricular tachycardia
(SVT) in our center. Among them, 90 patients had a total of
92 accessory pathways (age range: 8-75 years). Accessory
pathway was more commonly found (64%) than other
varieties of SVT. Fifty-five (61%) patients had manifest WolffParkinson-White (WPW) syndrome, while 35 patients had
concealed accessory pathway. Right-sided concealed pathway
was relatively uncommon. Overall left-sided pathway was
commoner [69 cases (75%)]. Among the left-sided pathways,
left lateral pathway was found in 54 (78%) cases, left
posteroseptal in 5 cases, left posterolateral in 2, left posterior
in 5, and left anterior in 3 cases. Right-sided pathway was
present in 21 cases (right posteroseptal: 9, free wall: 11,
Mahaim: 1). Two patients had pathways within coronary sinus
[1 had coronary sinus (CS) diverticulum]. RF ablation was
attempted in these cases. Primary success in RF ablation was
achieved in 89 cases. Three failed cases had accessory pathway,
1 each in right posteroseptal, right free wall and CS
diverticulum. Four (4%) patients had recurrence. Two had
repeat successful ablation. One patient had thromboembolic
event in cerebellar artery territory. Two patients had
compromised femoral arterial flow, which resolved with
medical therapy. In our centre, left lateral pathway-mediated
SVT was found to be the commonest variety in patients
undergoing ablation, which was highly successful in these
cases.
Profile of Radiofrequency Ablation in
Pediatric Population – Initial Experience
314
Bobby John, Purendra Kumar Pati, Yash Y Lokhandwala
Radiofrequency ablation in pediatric population is
challenging. We performed electrophysiological study in 14
patients and successful radiofrequency ablation in 13 patients
from November 2003 to June 2005. The age ranged from 2
years to 18 years (mean 12.6 years). The pediatric age group
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499
formed 7% of our study population. All except one patient had
supraventricular tachycardia (SVT). Accessory pathway (AP)induced orthodromic tachycardia was the commonest
arrhythmia, detected in eight patients. Dual AP was seen in
three; however in one of them, the second AP manifested after
a month. Left-sided accessory pathway was found in majority
of patients (5 out of 8 APs) and 3 were concealed. Typical
atrioventricular nodal re-entrant (AVNRT) tachycardia was
ablated in 3 patients. Incessant high right atrial tachycardia
was seen in one and another had fascicular ventricular
tachycardia. Successful ablation of typical atrial flutter
following atrial septal defect (ASD) device implantation in a 2year-child with one and half catheter technique was also
performed. Ebstein’s anomaly was seen in only one of our
patients who had dual right-sided accessory pathway.
Tachycardia was not inducible in one child who presented with
narrow QRS tachycardia. The average procedure time was
91.25 min (range: 30-180 min) and fluoroscopy time was
33.6 min (range: 7.4-50.4 min). The accessory pathway
effective refractory period was < 250 ms in six patients.
Tachyarrhythmia in the pediatric age group in our study was
mediated mainly by accessory pathway and multiple accessory
pathways are common in this age group.
Implications of Coronary Artery Disease in
Patients with Complete Heart Block during
Permanent Pacemaker Implantation: An
Angiographic Study
315
V Rajendran, V Jaganathan, R Alagesan, M Annamalai,
S Shanmugasundaram, Geetha Subramaniam, A Balaguru,
G Ravishankar, C Balasubramaniam
The exact etiology of chronic complete heart block (CHB),
specially the role of ischemia in the pathogenesis of CHB
remains uncertain. The aim of this study was to detect the
incidence of coronary artery disease (CAD) in patients who
were undergoing permanent pacemaker (PPM) implantation
and determine the anatomical and pathological basis of
conduction defects. The study population consisted of 32
consecutive patients with CHB who were admitted for PPM
implantation. The mean age of the study group was 58 years
(range: 50-66 years) and male-female ratio was 1:2. The
clinical parameters, demographic data and echocardiographic
data were collected. All patients underwent coronary
angiogram (CAG) prior to or at the time of PPM implantation.
Patients with valvular heart disease and cardiomyopathy were
excluded. The CAG study included measurement of diameter
and stenosis severity, qualitative assessment of flow
particularly the blood supply to territories that supply
conduction system [proximal left anterior descending (LAD)
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and right coronary arteries (RCA)] were documented. Among
32 patients with PPM, 12 (37.5%) had CAD and 20 had
normal epicardial coronary arteries (62.5%). Among patients
with underlying CAD, the conduction defect was localized to
infranodal in 8 and atrioventricular (AV) nodal in 4 patients.
There were no statistically significant differences in coronary
artery diameter and anatomical variations compared with
those patients who had normal coronaries. Among the patients
with CAD, lesions were more often observed in proximal
segments of LAD and right coronary artery (RCA). TIMI 3 flow
was documented in the major vessels supplying the conduction
system. Inspite of significant proximal CAD, we presume these
lesions per se may not be responsible for the conduction defects.
None of the patients had a lesion compromising blood flow to
the sino atrial (SA) node. Contrary to the expectations, critical
and diffuse coronary artery involvement were uncommon. We
conclude that CAD was more prevalent in patients who were
undergoing PPM implantation. But the lesions encountered
are generally not critical. Diffuse CAD are uncommon. Since
the blood supply to conduction system were not much
compromised, urgent revascularization procedures along with
PPM implantation may not be necessary.
Tissue Doppler Characteristics of Patients
with Congenital Complete Atrioventricular
Block and on Long-Term Right Ventricular
Pacing
316
Edwin Francis, Krishnakumar Nair, G Sreeram,
D Pradeepkumar, K Ramesh, VK Ajithkumar,
Jagan Mohan Tharakan, Thomas Titus
Thiruvananthapuram
The aim of the study was to look into the tissue Doppler
echocardiographic characteristics of paced patients with
congenital complete atrioventricular block (CCAVB) in
comparison to normal controls. 25 patients with CCAVB on
right ventricular (RV) pacing (mean age 26.9 ±11.7 years,
males 45%) were studied clinically and with transthoracic
echocardiography (TTE) ( including tissue Doppler) at a mean
follow-up of 10±6 years and compared with 75 controls (mean
age 30±19 years). The mean age at which permanent
pacemaker implantation (PPI) was done was 15.7±10.4 years.
No patient in the study group had congestive heart failure
(CHF). The mean left ventricular (LV) end-diastolic, end-systolic
dimensions and ejection fraction (EF) were 49.5±7 mm,
31.7±7 mm and 72.5±9% respectively. Mean six min walk test
distance was 380±93 m (normal values: 400-700 m).
Indication for PPI was syncope in 72%. The Tei Index was
significantly higher in the CCAVB group (1.3±0.7 v. 0.64±0.3,
p=0.0001). Similarly, the modified Tei index was also
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significantly more in CCAVB group (1.7±0.9 v. 0.6±0.3, p<
0.0001). The lateral mitral Em ( 9.8±3.3 v. 11.5±2.9), Am
(4.1±1.9 v. 6.2±6.2) and Sm (5.3±1.5 v. 7.8±2.7) were
significantly lesser in the CCAVB group. The time interval
between the onset of the q wave and peak of the systolic wave
(q to Sm) was significantly higher in CCAVB group (282.3±54
ms v. 140±53 ms). Em acceleration time was significantly less
in the study group (58.6±13 ms ). Em deceleration time and
Am deceleration time were higher in the CCAVB group
(100±24 v. 84 ± 23 ms and 71±55 v. 55±19 ms). The sum of
the mitral annular velocities (Em +Am +Sm) was significantly
lesser in CCAVB group (19±3 v. 25± 5). The ratios E /Em and
S1/ Sm were higher in the study group (17±3 v. 9±2.5 and
0.89±0.6 v. 0.4±0.2). At the lateral tricuspid annulus, only
Em (no difference in Am and Sm) was found to be significantly
less compared with control group ( 9.2±2 v. 12.3±12). The
intraventricular dyssynchrony represented in the RV as the
difference between (q to Sm peak) at the septum and lateral
RV free wall was 35.9 ± 35 ms. In the left ventricular (LV) the
difference between maximum and minimum q to Sm peak at
6 different points in the mitral annulus was 80.4 ± 34 ms. To
conclude, individual amplitudes of tissue Doppler waves are
significantly reduced in the left ventricle. This may represent
progressive depression of long axis of left ventricle. Tei index
and modified Tei index, which represent myocardial
performance, were greater in the study group. No gross LV
dysfunction or effort intolerance was noted in the CCAVB
patients on follow-up.
Long-Term Outcome of Pacemaker
Implantation with Different Pacing Modes in 317
Sick Sinus Syndrome
Stigymon Joseph, Krishnakumar Nair, JA Tharakan,
VK Ajithkumar, SK Dora, KM Krishnamoorthy,
KKN Namboodiri, Thomas Titus, K Pradeep Kumar, K Ramesh
Thiruvananthapuram
The aim of the study was to analyze effects of different
pacing modes in patients with sick sinus syndrome. From 1995
to 1999, 94 patients (male-female ratio 0.88:1, mean age at
implantation 44.2±15.2 years) who underwent packmaker
implantation for sick sinus syndrome formed the study
population. At follow-up, 4 had reached elective replacement
indication (ERI) and one end of life. The ERI was not achieved
in the routine ECG with magnet and was detected on
interrogation. Five patients had new onset atrioventricular
(AV) conduction delay. The incidence of 1st degree AV block
was 1.3% per year. At follow-up, none of the AAI patients
developed atrial arrhythmias; 4 out of 51 VVI patients
developed new onset atrial tachyarrhythmias. The incidence
of atrial tachyarrhythmia was 1% per year. No patient with
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AAI and DDD developed emboli. Five patients out of 51 VVI
developed an embolic episode (cerebrovascular accident)
following pacing. The incidence of embolic episodes was 1.3%
per year. The AAI patients did not show any significant change
in left ventricular internal dimension diastolic (LVIDd), LVIDs
(systolic), LV ejection fraction (EF) and fractional shortening
(FS) between time of implant and follow-up. Patients with VVI
had significantly larger LVIDs (32.34 >28) while the LVEF
(64.5 <72%) and FS (34.8 < 40%) were significantly lower
compared to values at implant (p<0.001). LVIDd showed a
non-significant increase. The corresponding values for LV dp/
dt are 1470 for AAI and 1310 for VVI. The VVI group had
higher left atrial size compared to AAI group (31.72 v. 28 mm,
p≤0.01). At follow-up, mild mitral regugitation was noticed
in 19 (29.7%) patients and mild to moderate in 11 (17.2%)
patients. Tricuspid regurgitation occurred in 36 (56.7%)
patients, mild in 22 (43.7%) and mild to moderate in 8 (12.5%)
patients. New onset symptoms appeared in 4 (6%) patients
which were considered to be due to pacemaker syndrome in
the absence of LV dysfunction and respiratory causes. Seven
patients died, an annual incidence of 1%. In conclusion, in
sick sinus syndrome, AAI pacing preserves the LV function
compared to VVI pacing with lesser incidence of atrial
arrhythmias and stroke. Progression of AV conduction
disturbance is a problem in AAI pacing. VVI pacing results in
higher incidence of valvular regurgitation and increase in left
atrial size. The incidence of pacemaker syndrome in VVI in
our study was 6% and is lesser than in other major published
series. Periodic pacemaker interrogation after 5 to 6 years of
implantation may be helpful in early detection of ERI.
proven coronary artery disease (CAD). The follow-up ranged
from 3 months to 5 years. The mode of pacing prior to
discharge and during follow-up was analyzed. At the time of
discharge, the mode of pacing was atrial sensed ventricular
pacing in all the patients. During follow-up, 71(91%) patients
continued to track the atrium and pace the ventricle. Six (7.6%)
patients were in VVI mode of pacing and 1 patient was in sinus
rhythm with 1:1 AV conduction. Sub-analysis of the 6 patients
in VVI mode revealed that 4 of them were in appropriate VVIR
mode. Of these 3 had significant sinus bradycardia and
predominant VVIR pacing with intermittent atrial tracking
whenever sinus P waves were present. One patient developed
atrial flutter and was reprogrammed to VVIR mode. Of the
remaining 2 who were in inappropriate VVIR mode, 1 child
had loss of atrial tracking due to unlooping of atrial loop and
1 had no P wave sensing due to possible lack of contact. Thus,
in our group of 78 patients with VDD mode of pacing only 2
(2.5%) patients had inappropriate VVIR pacing due to lack of
atrial sensing. Atrial sensed ventricular pacing is an acceptable
pacing option in patients with normal sinus function and AV
block. However, a small percentage of patients could have loss
of atrial tracking. Considering the lower cost of VDD pacing,
more frequent utilization of this mode needs to be promoted
as an affordable alternative to DDD pacing for maintaining
AV synchrony in patients with AV block.
Common Problem during Follow-up in
Pacemaker Clinic of a Tertiary Care Hospital
319
R Batra, S Anandaraja, M Sharma, S Kathuria,
P Chakraborty, S Mukhopadhyay, J Yusuf,
V Trehan, S Tyagi
A Follow-up Study of Permanent Atrial
Sensed Ventricular Pacing Mode
318
Ramdas Nayak, Georgie Thomas, Prasanna Kumar,
KK Mahesh, Praveen G Pai, M Vijaya Kumar, T Rajesh,
C Rajiv, KU Natarajan, Prakash Kamath, KK Haridas
In subjects with normal sinus rhythm and atrioventricular
(AV) block, VDD mode of pacing has the advantage of
maintaining AV synchrony and physiological hemodynamics.
A retrospective analysis of the follow-up pacing mode in 78
consecutive patients who underwent atrial sensed ventricular
pacing (VDD mode) from September 1999 to March 2005 was
performed. Out of these 78 patients, 61 (78.2%) underwent
permanent pacemaker implantation (PPI) for degenerative/
congenital complete heart block (CHB), 14 (17.9%) for 2:1 AV
block, 3 for post-operative CHB and 1 for post-myocardial
infarction CHB. The mean age was 59 years (range: 6-87 years)
with 54 males and 24 females. Thirty-two percent were
diabetic, 38% hypertensive and 48% had angiographically
F.p65
501
There is a proliferation in centres implanting pacemakers.
However, at most places the pacemaker clinics are nonexistent. At such places, the pacemaker clinics follow-up is
done by an ECG and pacemaker interrogation done only if some
problem is suspected. We decided to interrogate pacemakers
of all patients coming to our pacemaker clinic in addition to
routine electrocardiography (ECG). The results of 600
pacemaker interrogations during follow-up showed some
problems. The study population included 365 patients of VVI,
50 patients of VVIR, 20 patients of AAIR, 5 patients of AAI,
20 patients of VDD, 102 patients of DDD and 35 patients of
DDDR pacemakers. Following problems were detected and
corrected: (i) 48 patients with elective replacement time (ERT)/
end-of-life (EOL) were advised pacemaker change. Five patients
had completely exhausted the battery and showed no pacing.
Two of them were having syncope; (ii) Chronic thresholds were
adjusted in 100 patients. Output was adjusted to 2.5 versus
3.5 at 0.4 ms pulse width, resulting in average increase of 18
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Indian Heart J 2005; 57: 495–511
months in pacemaker longevity; (iii) Output was increased in
10 patients to achieve more consistent pacing ; (iv) Hysteresis
was switched on in 20 patients to help patients have their own
rhythm more often; (v) Rate responsiveness was switched on
in 10 patients (8 VVIR, 2 AAIR); (vi) Undersensing was
corrected in 24 patients; (vii) Paced and sensed AV intervals
were increased in 12 patients resulting in patients having their
own rhythm more often; (viii) Mode switch was switched “On”
in patients with DDD with atrial fibrillation (AF); (ix) Wound
dehiscence and pacemaker extrusion requiring explantation
and reimplantation done in 3 patients. Regular pacemaker
interrogation in pacemaker clinic detects host of problems
which can be easily tackled by simple programming. This
improves the longevity of pacemaker, leads to more
physiological pacing and decreased reimplantation rates.
Pacemaker Clinic: A Learning Experience
Vijaya Bharat, NK Das
with wound-related complications promptly. Lead
dislodgement in 2 asymptomatic patients in sinus rhythm was
detected in routine visits and repositioned. Down-regulation
of pacing mode from VDD to VVI and DDD to VVI were seen in
4 patients and restored by increasing the sensitivity. Failure to
pace in 5 patients with no symptom or mild symptoms could
be corrected by increasing the pulse width and/or amplitude.
Elective replacement indication (ERI) and EOL warning were
noted in 4 asymptomatic patients. By prolonging the battery
life, replacement of end of life EOL pacemakers was done less
frequently. In 2 patients with AAI pacing, even after 10 years
no progression to atrioventricular (AV) nodal disease was
noted. The clinic is being attended by patients with pacemakers
implanted elsewhere. Apart from facilitating care and giving
confidence to patients, the clinic familiarized the staff with
programming, dealing with trouble shooting and learn more
about higher pacing models, including implantable
cardioverter-defibrillators (ICDs).
320
Tata Main Hospital, Jamshedpur
Permanent pacemaker implantation (PPI) was started in
our hospital in 1982. The initial devices were nonprogrammable, and were replaced on battery depletion. With
the availability of pacemakers with programmable parameters
suitable modifications were done on need basis. In 1998 a
pacemaker follow-up clinic was started and all patients were
instructed to attend it as per standard protocol. The frequency
of attending the clinic was 1 month, 3 months, 6 months and
1 year after the implantation. Thereafter annual check up for
5 years, half yearly check up from 5 to 10 years and 3 monthly
checks beyond 10 years were recommended. The clinic was
conducted on the 1st Monday and Tuesday of every month by
a clinician, a biomedical technologist and assisted by a trained
nurse. In the first 2 visits greater attention was paid to wound
healing. Threshold values for pulse width (PW) and amplitude
were checked on the 2nd visit and kept at 3 to 4 times the
values. Heart rate adjustment and hysteresis were made
depending on the intrinsic rhythm. The position of lead tip and
loop were checked under fluoroscope in the 1st visit and then
on a need basis.
Year
1998 1999 2K
6/12
2K1
2K2
2K3
2K4
2005
6/12
Attendance
PW change
42
3
130 153
10 28
156
32
267
51
297
62
388
52
241
49
Amplitude
change
2
7
19
34
48
72
18
48
HR change
3
2
4
6
18
20
9
13
With an annual implantation of about 100 pacemakers, our
procedure-related complications reduced to < 2% per year.
Frequent visits in the early post-operative phase helped to deal
F.p65
502
Comparison of Tissue Doppler Imaging
Parameters of Dyssynchrony in Patients with 321
Right Ventricular Apical and Septal Pacing
Aparna Jaswal, Simmi Manocha, Jitender Singh,
Kartikeya Bhargava, Vanita Arora, Balbir Singh,
Manish Bansal, RR Kasliwal, TS Kler, Anil Saxena
The right ventricular (RV) apex has been used as the
traditional pacing site. However, several studies suggest that
RV apical pacing may cause remodeling and prove harmful.
Pacing in or near the His-Purkinje system has been shown to
result in faster and more homogenous ventricular activation
with a more favorable hemodynamic response. However, the
results from previous studies have been conflicting. We studied
30 patients with complete heart block (CHB) who were
undergoing DDD pacing. Ventricular lead was placed in the
RV apical position in 15 patients and RV mid septal in the rest
of the study population. The patients in the two groups were
matched according to left ventricular ejection fraction (LVEF).
In the RV midseptal group, pacing lead was implanted in the
region with narrowest QRS. Acute hemodynamic parameters
were studied with the help of conventional echocardiogram
and tissue Doppler imaging (TDI) was done to study the extent
of dyssynchrony in both the groups following pacing. Septalposterior wall delay (SPWD), time to peak systolic excursion
(onset of QRS on ECG to peak systolic excursion on TDI)
between mid basal and lateral basal segments (Ts) and
maximum delay between any two segments were used as
markers of dyssynchrony.
11/24/2005, 11:09 AM
Indian Heart J 2005; 57: 495–511
Parameter
Septal pacing
Apical pacing
p value
SPWD
Ts medial-lateral
Ts (max any 2 seg)
74
57.2
38
52.8
83.5
39.2
0.311
0.206
0.950
The results revealed that acute hemodynamic parameters on
echocardiography as well as dyssynchrony indices on tissue
Doppler imaging in patients with RV septal pacing were not
significantly different when compared with RV apical pacing.
Tissue Doppler imaging revealed that whether the patients are
offered RV septal or RV apical pacing, there is no significant
difference in the indices of dyssynchrony on acute
hemodynamic parameters. These patients will be followed up
to study for dyssynchrony on TDI at 6 months.
First Report in the Philippines of a NonTuberculous Mycobacterial Infection of a
Pacemaker Pocket
322
FRB Geronimo, A Gutierrez, GG Domingo, R Berba
UP-Philippine General Hospital, Manila, Philippines
This is the first reported case of a pacemaker pocket
infection due to an uncommon pathogen in the Phillippines.
A 46-year-old male was implanted a permanent pacemaker
for trifacscicular block after a myocardial infarction (MI). A
month after implantation, there was serosanguinous
dischange from the pacemaker site. He was afebrile. The
pacemaker was explanted. The pocket contained purulent fluid
and friable necrotic tissue. Fluid studies revealed positive for
acid fast bacillus (AFB), numerous PMNs, and gram positive
bacillus on culture medium. Complete blood count (CBC) and
urinalysis were normal. There was no growth on blood culture.
Disseminated tuberculosis work-up and HIV screening were
negative. After 7 days of incubation on tubercular (TB) culture
medium, mycobacterial colonies were detected. After
biochemical testing, Mycobacterial abscessus and M fortuitum
were suspected. Diagnosis of non-TB mycobacterial pacemaker
pocket infection was confirmed. He was given initially
cloxacillin and gentamicin for 7 days. Quadruple anti-TB
medicines were started but discontinued due to adverse drug
reaction. Based on sensitivity testing, doxycycline and
ciprofloxacin were given for 12 weeks. Spontaneous closure
of the pocket was observed. The patient remained stable.
Pacemaker pocket infections occur in 0.5 - 5.1% of cases.
Mortality rates range from 7.6%-26.9%. Local bacterial
contamination acquired during implantation is the most
common cause. Staphylococcus epidermidis is the most common
isolate. Non-tuberculous mycobacterium pacemaker infection
has been reported in only three cases. Levels of mycobacteria
in water samples are related to the complexity of the plumbing
site; hospitals have higher levels compared to public buildings
and residences. Outbreaks of soft tissue infections result from
F.p65
503
contaminated water. Series of these reports can provide
guidelines in preventions and treatment of non-tuberculous
pacemaker pocket infection.
Immediate and Medium-Term Results of
Definitive Radiofrequency Ablation for
Paroxysmal Atrial Fibrillation
323
S Petkar, D Fox, Brad Miller, A Fitzpatrick
Manchester Royal Infirmary, Manchester, UK
The number of patients undergoing definitive ablation
procedures [e.g. ostial ablation or segmental isolation of
pulmonary veins (PV)] for paroxysmal atrial fibrillation (PAF)
is increasing. Cure rates of 80% have been achieved by leading
centres in the world in the immediate- to long-term. At our
institute, the procedure has been undertaken since October
2000. This study was conducted to assess our immediate and
medium-term results of definitive radiofrequency ablation
(RFA) therapy for PAF. A retrospective analysis of all cases
subjected to a definitive ablation procedure for PAF between
October 2000 to March 2005 at our institute was undertaken.
Data was analyzed for patient demographics, procedural
details, immediate results, complication rates and recurrence
over the medium-term. A total of 72 procedures were
undertaken in 53 patients. Mean age of the patients was
54.1±8.5 years (range: 36-70 years), 38 males. All patients
were highly symptomatic and had been suffering from PAF for
a mean duration of 66.5±44.4 months (range: 6-240 months)
and were resistant to a mean of 3.1±1.3 drugs (range 1-6). A
minority had comorbid conditions. Thirteen patients
underwent multiple procedures (maximum 5). One transseptal puncture was undertaken in 12/72 (16.7%) procedures,
remaining underwent two punctures. Ostial ablation was
undertaken in 61/72 (84.7%) procedures with segmental
isolation in the rest. Mean of 2.5 veins were ablated
perprocedure. In 27/72 (37.5%) procedures, additional
ablation lines between right and left superior PV and between
the left inferior PV and the lateral mitral annulus were also
undertaken. Total fluoroscopy time was 41.2±20.6 min
(range: 6-111 min). Mean duration of follow-up was
14.7±10.7 months. After the first procedure, 29/53 (54.8%)
of patients were completely asymptomatic with or without
drugs. This percentage increased to 35/53 (69.8%) after the
second procedure. Cardiac tamponade occurred in 5/72
(6.9%) procedures. All were successfully treated with a echoguided percutaneously inserted pericardial drain. Other
complications were hematomas in 4/72 (5.6%) and
pericarditis in 3/72 (4.2%) procedures. There was no mortality.
Definitive ablation for PAF is highly effective in controlling
symptoms in the medium-term. It can be safely undertaken
with an acceptable morbidity. In our experience, the cure rate
is lower when compared to centres who have pioneered this
procedure.
11/24/2005, 11:09 AM
Indian Heart J 2005; 57: 495–511
Echo-Guided Management of Tamponade
during Atrial Fibrillation Ablation
324
S Petkar, D Fox, B Miller, A Fitzpatrick
Manchester Royal Infirmary, Manchester, UK
Curative percutaneous radiofrequency catheter ablation
(RFCA) of atrial fibrillation (AF) is increasingly practised.
Known complications of this procedure are pulmonary vein
(PV) stenosis, embolic stroke and cardiac tamponade.
Literature review suggests that the latter complication occurs
in 0.7% to 3.0% procedures. The aim of this study was to report
our rate of tamponade and highlight the safety and efficacy
of echo-guided non-surgical management during AF RFCA.
A retrospective analysis was undertaken of 72 consecutive AF
RFCA procedures performed in our institution from October
2000 to March 2005. All patients had the procedure
performed through the right femoral vein and access to the
left atrium was obtained using one (12/72 procedures) or two
separate transseptal punctures (TSP). Two transseptal sheaths
were placed in the left atrium in 60 cases. At least 10,000 units
of heparin was given into the left atrium in 63 cases on
completion of the second TSP. PV angiograms were obtained
by injection through the sheaths. Segmental ablation was
undertaken in 9 cases. The rest underwent ostial ablation
guided by a 10 Polar Lasso catheter, with RFCA using an EPT
ablation catheter. A total of 72 focal AF procedures were
performed in 53 patients (38 male). Mean age was 54±8.5
years (range: 37-70 years). Thirteen patients underwent
multiple procedures. Five procedures (6.9%, all male, 55±11
years) were complicated by cardiac tamponade. No case was
coincident with TSP. 3 PVs were ablated before tamponade
occurred. All patients were treated with an echo-guided
placement of a percutaneous apical pericardial drain in the
cath lab. This drained 963±640 ml (range: 250-1555 ml), but
stopped draining within 24 hours. All drains were removed
within 48 hours. There were no deaths. Median hospital stay
was 3 days (range: 3-5 days). Tamponade during RFCA can
be safely and effectively managed by a non-surgical echoguided pericardial drainage in the cath lab with minimal
morbidity and no mortality and should be the default
technique. Surgical treatment would involve dislocation of the
heart to treat perforations. With recent ablation of the PV ostia,
this could result in catastropic avulsion and death.
electrocardiogram (ECG) at baseline showed left anterior
hemiblock and echocardiography showed global hypokinesia
with left ventricular ejection fraction (LVEF) of 40%. Coronary
angiography showed normal coronary arteries. On
electrophysiological study, programmed electrical stimulation
(PES) of atrium resulted in a wide QRS tachycardia (WQT) with
right bundle branch block (RBBB) morphology and north-west
axis and RR interval of 340 ms. The AA cycle length in HRA
was 330 ms. Episodes of atrial tachycardia (AT) with 2:1
atriventricular (AV) conduction and relatively narrow QRS
were seen at the initiation of the tachycardia followed few
seconds later by WQT. During the WQT, His bundle electrogram
preceded each QRS with HV interval of 120 ms. Episodes of
same WQT with VA dissociation indicating a diagnosis of
ventricular tachycardia (VT) were also seen. Other features
suggestive of bundle branch reentry (BBR) VT were also
demonstrated. A diagnosis of dual tachycardia - AT and BBR
VT existing simultaneously was made. Adenosine injection
terminated the AT followed 2 beats later by termination of
WQT. PES of ventricle was unsuccessful in induction of VT. It
appeared that the presence of AT was necessary for the
initiation of BBR VT. Radiofrequency ablation of the right
bundle branch was done for the treatment of BBR VT. Postablation, atrial stimulation led to AT with variable AV
conduction without induction of BBR VT. Ablation of AT by
CARTO system was considered but was abandoned since the
cycle length and atrial activation sequence of the AT were
variable. AV nodal ablation followed by dual chamber
permanent pacemaker implantation with automatic mode
switch was performed and oral amiodarone started for
prevention of AT. The patient is asymptomatic three months
post-implant with no atrial or ventricular high rate episodes
on interrogation.
Long-term Outcome of Venous Access Sites
in Permanent Pacemaker Implantation
326
Stigymon Joseph, Krishnakumar Nair, JA Tharakan,
VK Ajithkumar, SK Dora, KM Krishnamoorthy ,
KKN Namboodiri, Titus Thomas, HB Shomu,
K Shajeem, K Ramesh
Thiruvananthapuram
An Interesting Case of Dual Tachycardia in a
Patient with Non-Ischemic Cardiomyopathy
325
Kartikeya Bhargava, Jitendra Singh, Aparna Jaswal,
Vanita Arora, Anil Saxena, Balbir Singh, TS Kler
A 44-year gentleman presented with history of episodic
palpitations since two years that responded to adenosine. His
F.p65
504
The aim of this study was to assess the status of access
veins used for permanent pacemaker implantation (PPI) over
long-term follow-up. From 1995 to 1999, 94 patients (malefemale ratio: 0.88:1, mean age at implantation 44.2±15.2
years) who underwent pacemaker implantation for sick sinus
syndrome formed the study population. The data regarding
the initial venous access for the pacing lead insertion was
available in 88 patients. A total of 92 pacing leads were
inserted. The approaches were right or left cephalic vein, or
11/24/2005, 11:09 AM
Indian Heart J 2005; 57: 495–511
right or left direct subclavian puncture. The most common
venous access site was right cephalic vein for 67 leads. Right
subclavian vein was punctured for 21 leads. Only 4 leads were
inserted from the left side (2 via left cephalic and 2 via left
subclavian vein). Ten of the 15 patients with AAI pacemaker,
underwent right cephalic approach, 1 had left cephalic
approach and 4 direct subclavian puncture. Of the 75 patients
with VVI pacemaker in whom approach were known, 54
underwent right cephalic approach, one had left cephalic
approach and 14 had direct subclavian puncture (12 right, 2
left). At follow-up, contrast venogram on the side of pulse
generator was done through antecubital vein to assess the
status of the access vein after getting informed consent.
Sixty-two patients underwent contrast venogram; 3 had total
occlusion of distal subclavian vein with collateral filling of
superior vena cava (SVC), and 3 had total occlusion of
proximal SVC with collateral filling of distal SVC. One patient
with no structural heart disease had blocked SVC with
collateral filling of left SVC draining to coronary sinus to right
atrium; 5 of these patients had right cephalic vein approach,
and one direct subclavian puncture. Two patients had AAI,
while remaining had VVI pacemaker implantation. 59.6%
(37/62) patients had no or <50% narrowing of the distal
subclavian vein, 30.6% (19/62) had more than 50%
narrowing (by QCA) and 9.3% (6/62) had total obstruction.
One patient who underwent PPI in 1997 presented 6 months
later with SVC obstruction was diagnosed to have carcinoma
bronchus. Comparing the cephalic vein and direct subclavian
approaches, there was no significant difference in the
incidence of total subclavian obstruction. Though other
studies have reported total occlusion, no previous study has
quantitatively analyzed venous narrowing. To conclude, the
incidence of access venous complications at follow-up is high,
but there is no difference in incidence between the different
approaches, cephalic or direct subclavian puncture.
Electrophysiological Study Predicts
Treatment Options in Unexplained Syncope
327
P Sahoo, BP Chatterjee, RS Joshi, S Banerjee
Kolkata
Thorough investigation of patients of syncope for exclusion
of cardiac cause is necessary because of bad prognosis of this
group of patients. Ninety cases of unexplained syncope in the
age group of 9 to 88 years, in whom rigorous non-invasive
evaluation was inconclusive, were sent for electrophysiological (EP) study between March 2003 to February 2005.
Head up tilt (HUT) test was negative in 78 of these patients.
Coronary angiography was done in 63 patients who were
above 35 years of age. Bradyarrhythmia was evaluated with
measurement of baseline intervals e.g. AH, HV, PR, QRS, QT
F.p65
505
followed by SNRT, CSNRT, SACT, chronotropic response to drug
challenge and Wenkebach point to see atrioventricular(AV)
conduction. Tachyarrhythmia was assessed after induction of
tachycardia, giving single, double and triple extrastimuli and
high rate pacing of right ventricle, right atrium followed by
drug provocation with injection isoprenaline and atropine. Our
results showed sick sinus syndrome in 6 (10%), increased HV
interval with 2nd degree AV block in 3 (5%), right bundle
branch block (RBBB) (n=4) and left bundle branch block
(LBBB) (n=8) with prolonged HV interval in 12 ( 20%), bundle
branch block with AV block (10%), paroxysmal
supraventricular tachycardia (PSVT) was found in 9 (15%),
which included atrioventricular nodal reentry tachycardia
(AVNRT) in 2, concealed accessory pathway in 4, atrial
fibrillation in 2, atrial flutter in 1, inducible ventricular
tachycardia (VT) was found in 6 (10%) which included right
ventricular outflow tract-ventricular tachycardia (RVOT-VT)
in 4, left septal VT in 1 and ischemic VT in 1. EP study was
inconclusive in 18 ( 30%) of cases. One-third of the patients
showed coronary artery disease; radiofrequency ablation (RFA)
was indicated in 9 (15%) patients and internal cardioverter
defibrilator (ICD) implantation was advised in 1 patient.
Secondly, in 30% of the patients, permanent pacemaker
indication could be decided. To conclude, coronary
angiography is mandatory after the age of 35 years before EP
study. Appropriate treatment for tachyarrhythmia could be
decided accordingly.
Head Up Tilt Test Has Low Sensitivity in
Diagnosis of Neurocardiogenic Syncope
328
P Sahoo, BP Chatterjee, A Khaitan, S Garg
Kolkata
Syncope accounts for 1-3% of emergency department visits
and up to 5% of hospital admissions as reported in the Western
literature. Cardiac and neurological disorders include 20% of
the whole spectrum and the rest 80% include situational,
orthostatic and neurocardiogenic syncope. Head up tilt (HUT)
test is the only means to diagnose atypical cases of
neurocardiogenic syncope. The sensitivity of HUT test varies
from 30% to 80% in different reports giving low diagnostic
yield among majority of investigators. We reviewed 120 cases
of HUT test conducted in our hospital between March 2003
to February 2005. Of these, 30 (25%) patients were referred
from outside and the rest 90 (75%) were evaluated in our
hospital. The age range varied between 9 to 78 years of which
40% were females. Only 4 of the patients had cardiac ailment
but suspected to have syncope of neurocardiac origin.
Rigorous evaluation was done to exclude cardiac and
neurologic origin with electrocardiogram (ECG),
echocardiography (Echo), Holter, electroencephalography
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Indian Heart J 2005; 57: 495–511
(EEG), computerized tomographic (CT) scan of brain. In HUT
test, the patient is monitored in supine position for 10 min.
Then the patient is tilted at 700 for 30 min. If the result is
negative then drug provocation with injection isoprenaline at
dose 2-5 µg/min followed by isosorbide dinitrate 10 mg
sublingual is started to reach the end point (syncope, presyncope or tachyarrhythmia). We could provoke syncope and
pre-syncope in only 32 (26.6%) patients. Out of the positive
cases, 18 ( 56%) showed mixed (Type I) response, 8 (25%)
showed cardioinhibitory response (Type II) and 6 (19%)
showed vasodepressor syncope (Type III). It was concluded
from the above results that HUT test has a low yielding value
in evaluation of syncope of unknown etiology after exclusion
of cases of cardiac and neurologic origin.
pacing in terms of safety and procedure times. (ii) RV apical
pacing in patients with impaired LV systolic function appears
to be detrimental even in the short-term, and possibly, worsens
it further. (iii) The possible advantage of RV septal pacing in
patients with preserved LV systolic function would be evident
in long-term follow-up studies.
An Unusual Case of Complete Heart Block
Associated with Mitochondrial Myopathy
330
Vipin Talwar
Right Ventricular Apical v. Right Ventricular
Outflow Tract Pacing – Our Initial Experience 329
Rahul Kumar, Joji Matthews, VS Prakash, Nagaraj Desai
Ramaiah Heart Centre and MS Ramaiah Medical College, Bangalore
Prior studies suggest that right ventricular apical (RVA)
pacing has deleterious effects on left ventricular function.
Whether the right ventricular outflow tract (RVOT) is a more
optimal site for permanent pacing in patients with standard
indications for permanent pacing has not been established.
Previous randomized trials in which patients were paced from
the RVA have been noted to have worsening of left ventricular
(LV) systolic function, specially during long-term follow-up.
Secondly, the issue of the procedure time and also long-term
stability/higher incidence of lead displacement with reference
to RVOT pacing needs to be studied. We undertook to test the
feasibility of performing RVOT pacing as a routine in patients
receiving permanent pacemaker therapy. Patients were
randomly assigned to receive either RV apical pacing or RV
outflow tract pacing. The patient characteristics as well as the
results of the study are shown in the table.
Total number
of Patients
RVOT pacing (n=50)
VVI (n=7) DDD (n=43)
Base line
characters Class I
4
36
Class II
1
3
Class III
2
4
Pre-implantation
LVEF
Class I
> 55%
> 55%
Class II
50%
40-50%
Class III
40-45%
38-45%
Post-implantation
LVEF (mean 6 months follow-up)
Class I
> 55%
> 55%
Class II
50%
40-50%
Class III
40-45%
38-45%
Procedure
time, min
60-90
90- 150
(mean 70) (mean 110)
Fluoroscopic time
6±4 min
16±3 min
Mean QRS duration
110 ms
Post-implantation complications
VVI (n=7)
RVA pacing (n=50)
VDD (n=3)
DDD (n=40)
5
1
1
3
0
0
36
1
3
>55%
50%
40%
>55%
-
>55%
48%
18-30%
>55%
50%
40%
>55%
-
>55%
48%
18-30%
50-70
(mean 60)
6±3 min
70-80
(mean 75)
9±3 min
130 ms
70-130
(mean 90)
15±4 min
506
Intraoperative Radiofrequency Pulmonary
Vein Isolation by Conventional Percutaneous 331
Radiofrequency Ablation Catheter
Joy M Thomas, BR Jaganath, Sanjay M Cherian,
Pankaj Shrivastava, KM Cherian
Chennai
2
In conclusion, (i) RV Septal pacing appears to match RV apical
F.p65
A 30-year-old female with the history of generalized
weakness, bilateral ptosis for last 10 years treated by local
physician, presented to our emergency department with
recurrent episodes of Stoke Adams attack with a heart rate of
23 bpm, hypotension and severe metabolic acidosis. The
electrocardiogram (ECG) revealed complete heart block with
a wide QRS escape at a rate of 23 bpm. A temporary
pacemaker was inserted immediately and the patient’s general
condition and hemodynamics improved significantly.
Necessary investigations and drug history were taken to rule
out any secondary cause for complete heart block. A
neurological examination revealed extra occular myopathy
with stunted growth, bilateral ptosis and proximal muscle
weakness. Her ophthalmologic examination revealed
pigmentary retinopathy suggestive of mitochondrial myopathy
(Kearn- Sayre syndrome). The echocardiographic examination
revealed structurally normal heart. The patient was implanted
VVI pacemaker and discharged in a stable condition. The
frozen muscle biopsy revealed large mitochondrial DNA
deletion which confirms the diagnosis of Kearn-Sayre
syndrome. We reviewed the literature which revealed 3 such
cases reported earlier, with various (AV) conduction
disturbances. This is very rare form of myopathy which usually
has structurally normal heart with AV conduction disturbance
in the form of prolonged HV interval, right bundle branch
block (RBBB), left bundle branch block (LBBB), bifascicular or
trifascicular block and complete heart block.
Percutaneous catheter pulmonary vein (PV) isolation is an
effective means of curing and controlling atrial fibrillation
11/24/2005, 11:09 AM
Indian Heart J 2005; 57: 495–511
(AF). Patients requiring mitral valve (MV) surgery may be
candidates for intraoperative isolation of PV by radiofrequency
ablation (RFA). We report the use of conventional
percutaneous RFA catheters to create ablation lines in the PV
under direct observation during MV surgery. Three patients
of chronic AF with duration > 1 year, two of them males, with
ages 31, 48 and 55 years had left atrial (LA) sizes of 55 mm,
62 mm and 49 mm. The operating surgeon approximated an
8 mm tip Bard Stinger RFA catheter on contiguous sites around
the four PVs to create a continuous line of electrical block.
Radiofrequency energy was delivered by an EPT 1000 RF
generator, with appropriate grounding. Power mode was
selected, and the power maximum set at 45 Watt. The
impedance was monitored and the catheter tip was irrigated
manually by saline from a syringe-needle to keep the
temperature from cutting off the power. Energy was delivered
at each site for 60 s or until contact was broken. The procedure
took on an average of 25 min extra surgical time, with an
average of 22 energy deliveries. All the three patients were in
sinus rhythm at the end of the surgery and one returned to
AF three days later. The other two were discharged in sinus
rhythm. All patients had amiodarone prior to and after the
ablation and also had an LA appendage reduction done. Thus,
in order to economize conventional catheter, radiofrequency
catheters may be used intraoperatively to isolate the PVs in
chronic AF. Modifications of these catheters are being
fabricated for more effective and shorter energy applications.
atrial (RA), coronary sinus (CS), His and RV in most SVT
patients. In patients with manifest accessory pathway (AP),
the number of catheters varied according to operator’s
discretion. The high RA catheter was placed immediately (if
already not in place) if catheter manipulation with CS catheter
resulted in SVT induction. SVT got induced during catheter
placement in 40 (33%) patients. The incidence was 29% (22/
75) in patients of AVNRT and 33% (18/55) in the AVRT
population. In the catheter-induced SVT group, the final
diagnosis was AVNRT in 22 (55%) patients and AVRT in 18
(45%) patients. The AP was concealed in 12 (66%) and
manifest in rest. In the conceded AP group, the location was
antero-septal in 1, postero-septal in 5 and left lateral in 6
patients. In the manifest group the location was as follows: left
lateral in 4 and postero-septal in 2. Recurrent SVT induction
during further repositioning of diagnostic catheter and RF
catheter manipulation was seen in 4 (18%) patients of AVNRT,
8 (66%) patients of concealed AP and 3 (50%) patients of
manifest AP. Catheter positioning can induce SVT in about onethird of AVNRT/AVRT patient population and provides
important opportunity to make the diagnosis. Thirty-eight
percent of these have repeated catheter-induced tachycadias.
Prospective Study of Incidence of Catheter/
Programmed Stimulation- Induced NonClinical Atrial Fibrillation during
Electrophysiologic Studies
Prospective Study of Incidence of CatheterInduced Supraventricular Tachycardia during 332
Electrophysiological Studies in Consecutive
Patients of AVNRT and AVRT
R Batra, S Anandaraja, M Sharma, A Sahu,
S Mukhopadhyay, J Yusuf, V Trehan, S Tyagi
GB Pant Hospital, Delhi
Induction of supraventricular tachycardio (SVT) while
placing catheter for electrophysiological studies (EPS) is well
known. However, its incidence in different types of SVT in
Indian patients has not been studied in a prospective manner.
We evaluated this in consecutive patients of atrioventricular
nodal reentrant tachycardia (AVNRT) and atrioventricular
reentrant tachycardia (AVRT) undergoing EP studies with a
view to look for overall incidence of catheter-induced SVT and
ease of repeated induction of tachycardia with catheter
manipulation in this group of patients. There were 120
consecutive patients (final diagnosis was AVNRT in 75 and
AVRT in 55) over a period of 8 months. The patients were in
sinus rhythm at the time of taking them to the laboratory. The
EP study was done under local anesthesia (LA) and mild
sedation. Four diagnostic catheters were used – high right
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333
S Anandaraja, R Batra, A Sahu, M Sharma,
S Mukhopadhyay, J Yusuf, V Trehan, S Tyagi
GB Pant Hospital, Delhi
Induction of non-clinical atrial fibrillation (AF) while
placing EP catheters for electrophysiological studies (EPS) or
during programmed stimulation is well known. However, its
incidence in supraventricular tachycardia (SVT) patients has
not been studied in a prospective manner. We evaluated this
in a study of consecutive patients of atrioventricular nodal
reentrant tachycardia (AVNRT) and atrioventricular reentrant
tachycardia (AVRT) undergoing EP studies. The study included
120 consecutive patients (final diagnosis AVNRT in 75 and
AVRT in 55) over a period of 8 months. The EP study was done
under local anesthesia (LA) and mild sedation. Four diagnostic
catheters used were – high right atrium (RA), coronary sinus
(CS), His and right ventricular (RV) in most SVT patients. In
patients with manifest accessory pathway (AP), the number
of catheters varied according to operator’s discretion.
Programmed stimulation included conventional pacing
protocols of ventricular and atrial stimulation. AF was induced
in 12 (10%) patients. This included 7 patients of AVNRT and
5 patients of AVRT. The episodes were self limiting (lasting <5
min) in 7 patients and sustained in 5. The AF was induced
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Indian Heart J 2005; 57: 495–511
during catheter manipulation in 4 patients and during
programmed atrial stimulation in 8. During programmed
stimulation AF developed during single atrial extra stimuli in
2 cases during double extras timuli in 5 patients and 2 during
incremental atrial pacing (1 patient had AF both with double
extra stimuli and incremental pacing). One patient of
sustained AF developed rapid ventricular response over a
manifest left lateral accessory pathway (AP). This patient and
the other 4 with sustained AF required cardioversion with
biphasic 150 J shock resulting in sinus rhythm. One patient
required a repeat shock because of immediate reinitiation of
AF. He was cardioverted after pre-loading him with 300 mg
intravenous amiodarone. The mean age of patients developing
AF was 48±10 years versus 32±12 years in those not
developing AF. Catheter positioning or programmed
stimulation can induce non-clincal AF in about 10% SVT
patients undergoing EP study which can be sustained in about
half of these, and require cardioversion in order to continue
with the study. This is especially important in patients of
manifest pathway, who can develop fast ventricular response.
The tendency to develop AF is more common in older patients
undergoing EP study.
Beat-Buffer Technique for Mapping Difficult
Tachycardias
334
K Sharada, J Aravind, V Suresh, C Narasimhan
CARE Hospital, Hyderabad
Electro anatomical non-fluoroscopic 3D mapping (CARTO)
system improves mapping of tachycardia circuits for better
success of radiofrequency catheter ablation (RFCA) in difficult
arrhythmias. Clinical tachycardias may sometimes be noninducible in electrophysiology (EP) lab despite best efforts; beatbuffer facility in CARTO system allows acquisition of 10
consecutive beats at a time, of which one optimal beat may be
accepted for mapping the tachycardia circuit. This facilitates
precise mapping of even ill-sustained tachycardias. We report
use of this technique in 3 male patients (mean age 26 years),
with recurrent symptomatic episodes (syncopal in one).
Documented tachycardia was suggestive of idiopathic right
ventricular outflow tract ventricular tachycardia (RVOT-VT)
in 2 patients and left atrial tachycardia in one. In all 3,
tachycardia was non-inducible during EP study; but
isoprenaline infusion induced frequent isolated ectopic beats
identical in morphology to the documented 12-lead clinical
tachycardia beats. Beat-buffer facility was used for precise
mapping of these ectopic beats with CARTO system which
allowed successful targeting of RFCA in all 3. There were no
peri-procedural complications. Mean procedural time was 180
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±66 min and mean fluoroscopic time was 44 ±36 min. Over a
mean follow-up period of 14 months, all the patients are free
of arrhythmia recurrences without being on any
antiarrhythmic medication. Beat-buffer technique on CARTO
system allows precise mapping of isolated tachycardia beats,
even when sustained tachycardia is non-inducible, facilitating
successful radiofrequency catheter ablative procedure.
Effect of Changes in Heart Rate on the
Corrected QT Intervals Calculated Using
Bazett’s and Fridericia’s Formulae
335
Dilip Karnad, Sheetal Shetty, Sugam Salvi, Niraj Vyas,
Snehal Kothari, Dhiraj Narula, Yash Lokhandwala
Quintiles ECG Services, Mumbai
The QT interval is inversely related to heart rate. Several
methods including Bazett’s and Fridericia’s formulae are used
to obtain QTc (QT corrected for the effect of heart rate). The
optimal correction formula is a subject of controversy. The aim
of this study was to evaluate the difference in QTc obtained by
Bazett’s and Fridericia’s correction formulae. In phase II, a new
drug for amyotrophic lateral sclerosis was sought to be
evaluated. Patients were given the drug twice daily for 28 days.
12-lead electrocardiograms (ECGs) were recorded at baseline
and on day 29 and analyzed in a central core lab using
onscreen digital calipers. Female patients had a statistically
significant decrease in QTcB, but not in QTcF, at day 29 as
compared to baseline values. However, they also had a
statistically significant decrease in the heart rate. No
statistically significant effect was seen in males.
Day 0
Day 29
Difference
p value
Females
HR (bpm)
QTcB (ms)
QTcF (ms)
81
419
400
75
412
398
-6
-7
-2
0.0146
0.0364
0.5477
Males
HR (bpm)
QTcB (ms)
QTcF (ms)
75
400
386
72
401
390
-3
2
4
0.104
0.6668
0.2144
The Bazett’s formulae (QTcB = QT/RR 0.5), is known to
overcorrect for the effect of the heart rate. This produced a
significant shortening of QTc in the female patients, who also
had a significant decrease in heart rate. Fridericia’s formula
(QTcF=QT/RR0.33) does not have this limitation and showed
no significant change in QTc. To conclude, Fridericia’s formula
is more accurate than Bazett’s formula and should be used
more frequently in clinical practice.
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Indian Heart J 2005; 57: 495–511
Single Center Experience of Atrioventricular
Nodal Re-entrant Tachycardia Ablation from
Armed Forces
336
Harminder Singh, Charanjit Singh, Yash Lokhandwala,
Viney Jetley, N Aggarwal, A Banerji, P Bharadwaj,
JS Dugal
Atrioventricular nodal reentrant tachycardia (AVNRT) is
commonest cause of supraventricular tachycardia. At our
center, 98 patients (age range: 18-67 years, 62 males)
underwent ablation in last 3 years. Arrhythmia was
documented by electrocardiogram (ECG) in 61 cases.
Tachycardia was induced in all but 2 cases. In both these, the
ECG was suggestive of AVNRT. Tachycardia cycle length was
250–376 ms. Presence of associated bypass tract was excluded
by rapid atrial pacing and ventricular pacing. In one case
associated bypass tract was found in left posterolateral region.
This tract was not ablated because it had long refractory period
and was not participating in atrioventricular reentrant
tachycardia (AVRT). Ablation of slow pathway was done by
combined ECG and anatomic criteria with 60 s radiofrequency
lesion at 50 W power and 60ºC temperature. In selected cases
gradual increase of power was done starting from 25 W.
Junctional rhythm was seen in all cases. End point was noninduciblity of the tachycardia by 2 atrial extra-systole with and
without isoprenaline till atrial refractoriness. Ablation was
successful in 96 (98%) cases. The unsuccessful ones included
one case where tachycardia was not inducible and another in
which ablation site was considered dangerously close to the
His bundle recording site. Complications during the procedure
included complete heart block (CHB) (1 case), transient CHB
(3 cases), vaso-vagal attack during the procedure (1 case).
Cause of transient CHB was mechanical bumping of AV node
(2 cases) and movement of ablation catheter to His bundle
region during delivery of lesion (1 case). We conclude, slow
pathway ablation for AVNRT has high safety and efficacy at
our multi-operator and upcoming EP center.
QRS Width as a Predictor of Occurence of
Clinical Ventricular Tachycardia in Patients
with Internal Cardiovertex Defibrillator
337
Jitendra Singh, Aparna Jaswal, Kartikeya Bhargava,
Vanita Arora, Anil Saxena, Balbir Singh, TS Kler
Increased QRS duration is considered predictor of sudden
cardiac death due to ventricular tachycardia (VT) in patients
with left ventricular (LV) systolic dysfunction. We tried to test
this hypothesis by follow-up of implantable cardiovertendefibrillation (ICD) patients. We divided our ICD recipients into
two groups according to QRS duration irrespective of the
indication of implantation. Those with QRS <120 ms were
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considered narrow QRS and >120 ms were considered wide
QRS. We followed both groups by periodical ICD interrogation
for episodes of ventricular arrhythmia and therapies delivered.
A total of 40 patients were followed for average of 25 months.
Eighteen (45%) patients had narrow QRS and 22 (55%)
patients had wide QRS duration. Mean ejection fraction was
28±5% in narrow QRS group and 29±4% in wide QRS group.
(p>0.05) Among narrow QRS group, 13 (72%) patients had
one or more episodes of VT terminated by either antitachycardia pacing or shock. Among wide QRS group 15
(68%) patients had at least one episode of ventricular
tachycardia terminated by either anti-tachycardia pacing or
shock. Average number of therapies received per ICD was 1.5
in the narrow QRS group and 1.35 in wide QRS group. Our
study suggests that QRS width has no relation with occurrence
of clinical VT in patients with LV dysfunction and ICD.
Drug-Induced Complete Atrioventricular
Block
338
RPS Bharadwaj, Mohd Ahmad, Ramesh Thakur,
RK Bansal, Gajinder Goyal, J Rajagopal, Sukhvinder Singh
Logically, drug-induced atrioventricular (AV) block does not
mandate a permanent pacemaker implantation and is a class
III indication in ACC/AHA guidelines. Clinical observations
reveal that these patients have recurrence of AV block even
after discontinuation of the culprit drug. This study was
undertaken to evaluate the true incidence of the drug-induced
AV block and possibility of lurking degenerative block
underlying these cases. Consecutive symptomatic patients of
non-ischemic Type III i.e., complete AV block (confirmed by
cardiac enzymes) who were on AV nodal blocking agents on
admission (e.g. beta-blockers, calcium channel blockers and
digoxin) and in whom AV block subsequently resolved during
hospital course were followed up for a maximum period of 6
months. The end point was recurrence of the complete AV
block. The HV interval was measured pre-discharge for all
patients. Patients with associated electrolyte abnormalities
were excluded. Study period was from January 2004 to May
2005, during which 37 patients were enrolled, mostly before
January 2005. Out of these, 37 patients, 22 (59.45%) had
recurrence of the complete AV block even in the absence of
the drug. The mean period of the development of the block
was 7 weeks (range: 5 days to 4.5 months). HV study had
revealed prolonged HV interval (>55 ms) in only 7 of these 22
patients. Out of these 7 patients, 4 (57%) had recurrence of
AV block. One patient died out of hospital, probably due to
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Indian Heart J 2005; 57: 495–511
Stokes-Adams attack. Significant number of patients
presumed to have pure drug-induced AV block do have
recurrence of AV block even after discontinuation of the culprit
drug, indicating underlying degenerative disease of conduction
system. HV interval seems to have no role in predicting this
possibility.
Direct Current Cardioversion of Atrial
Fibrillation following Percutaneous
Transmitral Commissurotomy - A Pilot Study
340
Babu Vasudev, Kader Muneer, Shyam Kumar, Vinayakumar,
CG Sajeev, Johnson Francis, CC Velayudhan, K Venugopal
Short QT Syndrome: What is it? And
Where is it!
339
Aniket Puri, Amit Jain, Nishant Gupta, Sandeep Kumar,
SK Dwivedi, VS Narain, RK Saran, VK Puri
Short QT syndrome (SQTS) has received considerable
attention over the last couple of years with little substantial
yield. Seven families have been reported with this syndrome
having a propensity for ventricular tachyarrhythmias, atrial
fibrillation and considered as high risk for sudden cardiac
death. SQTS has been defined as a corrected QT (QTc) of less
than 300 ms and predicted QT (QTp=656/(1+heart rate/100)
of less than 80%. We decided to investigate the prevalence of
this simple marker in apparently healthy young individuals
who present to our outpatient department with non-specific
complaints or routine medical examination and in whom we
had suitably ruled out the possibility of secondary QT
shortening e.g. dyselectrolytemia, coronary artery disease
(CAD) etc. QTc was measured using an automatic 12-lead
electrocardiogram (ECG) machine; all ECGs were subsequently
verified by a cardiologist and QTc cross checked manually
wherever required. We enrolled 400 subjects (42% males) from
our OPD. Out of the subjects screened the average QTc was
420±20 ms for males (42%), and 435±16 ms for females
(58%) and the shortest QTc screened was 330 ms. QTp <80%
was found in only one patient who was also incidentally found
to be taking digoxin. Only 5 subjects were reported by the
machine to have a QTc <300. Four were found to have
calculation errors in the cycle length and one was on digoxin,
thus none of the screened subjects were found to have the
classical idiopathic SQTS. We conclude that SQTS is probably
a rare isolated phenomenon restricted so far to few families.
Having known about this syndrome, we now continue to
identify such patients, to study its significance, if any.
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Atrial fibrillation (AF) affects hemodynamics of mitral
stenosis (MS) adversely. Even in patients with mild to moderate
MS, AF produces symptoms in addition to the added risk of
embolic episodes. There are reports of successful direct current
(DC) cardioversion as an elective procedure 4 weeks after
percutaneous transvenous mitral commissurotomy (PTMC).
We studied the efficacy and safety of DC cardioversion
immediately after PTMC and the short-term follow-up. Ten
patients with severe rheumatic MS and AF who underwent
successful PTMC were studied. Patients had a mean age of 40.6
years with mean AF duration of 2.8 years, mean left atrial (LA)
size: 51.4 mm, mean right ventricular systolic pressure (RVSP):
55.2 mmHg, mean mitral valve area (MVA) 0.8 cm2. All
patients underwent DC cardioversion with 100 to 200 J
immediately after PTMC in catheterization laboratory
(Cathlab). All of them except one converted to normal sinus
rhythm after cardioversion. They were started on amiodarone
and were followed-up. At follow-up of 4-7 months (mean: 6.2
months) all remained in sinus rhythm. The patient who did
not convert to sinus rhythm had a huge LA (60 mm) and long
standing AF (10 years). This study shows that DC cardioversion
immediately after BMV is effective and safe. All patients
underwent transesophageal echocardiography (TEE) prior to
procedure to exclude clot in LA. Cardioversion was done in
Cathlab with all the facilities for resuscitation with pacing lead
in place. Advantage of procedure is that no repeat admission
and TEE is required for later cardioversion. Hence early
cardioversion may be considered after PTMC in all patients
with AF.
QTc Dispersion in Acute Myocardial
Infarction as a Predictor of Ventricular
Arrhythmias
341
Jacob Mathew, N Jayaprasad, SV Praveen, Vikram Sankar,
TN Sunil Roy, Vinayakumar, CG Sajeev, Velayudhan,
Johnson Francis CC, K Venugopal
In acute myocardial infarction (AMI) QTc dispersion
demonstrates ventricular instablility and is linked to
arrhythmic events. This study was conducted to assess whether
increased QTc dispersion in acute myocardial infarction (MI)
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Indian Heart J 2005; 57: 495–511
predicts ventricular arrhythmias and the relation of QTc
dispersion with the site of infarct, in-hospital mortality and
effect of thrombolysis. Hundred consecutive patients admitted
to coronary care unit with acute ST elevation myocardial
infarction (STEMI) and 50 normal controls were included in
the study. QTc dispersion was measured from simultaneous 12lead electrocardiogram (ECG) taken at presentation and at 72
hours. Patients were followed up for one week and the end
points (ventricular tachycardia, ventricular fibrillation and
death) were measured. Fifty-eight patients had anterior and
42 had inferior wall myocardial infarction. Mean QTc
dispersion in anterior wall MI was 98.57±32.11 ms and
inferior wall MI, 67.66±26.33 ms. The corresponding value
in the control group was 46.18±12.42 ms. Seventeen percent
of patients had ventricular tachycardia or fibrillation. QTc
dispersion was significantly increased in those who developed
ventricular tachyarrhythmias. Persistently increased QTc
dispersion at 72 hours was correlated with increased risk of
fatal ventricular tachyarrhythmias. Thrombolysis significantly
reduced the QTc dispersion and the risk of ventricular
tachyarrhythmias in anterior wall MI, but had no significant
effect on QTc dispersion in inferior infarcts. In-hospital
mortality was 11% at 1 week. QTc dispersion in non-survivors
was more than that of survivors (131.73±25 v. 82.14±27
ms). A QTc dispersion of >110 ms during the first week of
acute MI was correlated with fatal ventricular tachycardias.
QTc dispersion was significantly increased in acute MI patients
with fatal ventricular tachyarrhythmias. QTc dispersion
persistently elevated at 72 hours was correlated with fatal
arrhythmias. Thrombolysis significantly decreased QTc
dispersion and ventricular tachyarrhythmias in anterior wall
infarcts.
Left Ventricular Function based on
Electrocardiography in Patients with Left
Bundle Branch Block
342
Farzad Jalali, M Haji Ahmadi
Babol University of Medical Sciences, Iran
Prolongation of QRS duration, particularly in left bundle
branch block (LBBB) is commonly associated with many
cardiac problems. Electrocardiographic (ECG) study of QRS
duration and electrical axis may be predictor of severe left
ventricular (LV) systolic dysfunction. In this prospective study
(2001-2003). 150 patients with diagnosis of LBBB were
divided into two groups (one with QRS ≥0.16 ms) and the other
with QRS <0.16 ms). Then relationship between QRS duration,
left axis deviation (LAD) and echocardiographic LV ejection
fraction was analyzed. There were 85 male and 65 female
patients, all within 35-65 years range. One hundred and six
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511
patients had coronary artery disease, 29 patients had valvular
and 15 had myocardial disease. Eighty-six patients had normal
axis, and 64 had LAD. The mean ejection fraction in the
patients with a QRS duration ≥ 0.16 s (n=19) was significantly
lower than the mean ejection fraction in the patients with a
QRS duration <0.16 s (n=131) p<0.15). Presence of left axis
deviation associated with LBBB did not have added predictive
value and was not significantly correlated with ejection
fraction. In conclusion, the QRS duration > 0.16 s in the
presence of LBBB has a significant inverse relation with
ejection fraction and is a simple and appropriate marker of
significant LV systolic dysfunction.
Assessment of the Accuracy of Stress/Rest
Myocardial Perfusion Studies in Patients with 343
Bundle Branch Blocks
UK Shein, DP Naidoo, SU Maharaj, WID Rae, F Peer
Nelson R Mandela School of Medicine & Inkosi Albert Luthuli Central
Hospital, Durban, South Africa
Rest and exercise electrocardogram (ECG) has limited value
in the assessment of myocardial ischemia in patients with left
(L) or right (R) bundle branch block (BBB). Perfusion scanning
with 99 mTC-MIBI is an alternative non-invasive test when
the ECG is uninterpretable. However, the significance of septal
perfusion defects in patients with septal wall motion
abnormalities is unclear. We sought to assess whether the
information from myocardial perfusion studies is comparable
with the findings of standard coronary angiography in patients
with BBB. Patients with LBBB (n=33) or RBBB (n=43) who
underwent both MIBI studies and coronary angiograms were
selected for study. The extent and arterial territory of ischemia
or infarction on the polar map was compared with standard
coronary angiogram studies. Normal or non-occlusive disease
was found on angiography in 3 of 14 LBBB and 3 of 11 RBBB
patients. MIBI showed 2 and 1 of these patients (with nonocclusive disease), respectively having small fixed defects which
included the septum. Ischemic or infarct territories of the 3
major coronary arterial distributions on MIBI scan matched
with disease seen on angiography in 11 out of 14 LBBB and 8
out 11 RBBB patients (p≤0.05). A moderate reversible defect
was found in 3 LBBB patients, and 2 of the RBBB patients. A
significant reversible defect was found in one each of RBBB
and LBBB. In patients with BBB myocardial perfusion reststress studies: (i) can detect ischemia/infarct and indicate the
degree of reversibility, (ii) correlate well with angiographic
coronary artery involvement, (iii) small fixed septal perfusion
defects may occur in normal persons with BBB. This is a useful
investigation in the assessment of patients with BBB and
clincial indications requiring angiographic assessment.
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512 Cardiomyopathy and Heart Failure
Effects of Atorvastatin on Inflammatory
Markers in Patients with Congestive Heart
Failure
344
DP Sinha, UK Saha, M Das, M Panja
We studied whether atorvastatin treatment improves
endothelial function and affects inflammatory markers in
patients with congestive heart failure (CHF) having normal
cholesterol levels. CHF is associated with activation of
inflammatory process and endothelial dysfunction. We
investigated effect of 4 weeks therapy with atorvastatin (40
mg/day) on inflammatory markers and on endothelial
function in patients of CHF with normal cholesterol levels
(<200 mg/dl). Patients were randomly allocated to statin
(n=19) and no-statin (n=19). Serum level of high sensitivity
C-reactive protein (hsCRP) was measured as inflammatory
marker. Flow-mediated dilation of brachial artery was
measured for determining endothelial function. Brachial
artery flow-mediated dilation was significantly improved in
patients who received atorvastatin (from 3.2% ±1.5% to
5.1%±2.2%, p< 0.05). Levels of hsCRP decreased in
atorvastatin-treated patients from 1.3 ±0.5 mg/dl to 0.8±0.2
mg/dl (p<0.05). These findings indicate that atorvastatin may
improve forearm vasodilatory response to reactive hyperemia
and depress inflammatory process in patients with CHF and
normal baseline cholesterol levels.
Clinical Profile of Acute Myocarditis
345
N Murali Krishna, Ali Faizal, Asishkumar Mandalay,
K Dineshbabu, CV Umesan, J Devi, Somy Mathew, Litty Jose
Malabar Institute of Medical Sciences, Calicut (Kerala)
Patients treated with a diagnosis of myocarditis over a
period of six months were included in this study. Out of 10
patients (age range: 7-88 years), nine had elevated serum
cardiac troponin-I. The cases were seasonal, occurring at time
of infectious fever epidemics. Two patients had a primary
diagnosis of leptospirosis. Six patients presented with acute
febrile illness and myocarditis with breathlessness and
hypotension. Two patients had viral fever with multisystem
involvement including myocarditis. Three patients had
conduction system involvement at presentation. Two patients
with complete heart block required temporary pacing. One
patient had only transient complete heart block. Patients with
leptospirosis and myocardial involvement had normal left
ventricular (LV) function. Half of patients with viral
myocarditis had LV dysfunction. Patients with multisystem
involvement with viral fever, incidentally, had normal LV
function. One-third cases of viral myocarditis had presented
with conduction disturbances, namely complete heart block,
which reverted to sinus rhythm in all except one patient. All
the patients with LV dysfunction had regained normal LV
function on follow-up, within two months. These patients were
treated with angiotensin-converting enzyme (ACE) inhibitors,
G.p65
512
carvedilol, digoxin and diuretics. In our series, troponin-I had
a high sensitivity as a screening tool in acute myocarditis, with
90% cases being troponin-I positive with high values. Troponin
I had higher sensitivity than two-dimensional echocardiography- derived LV function and global LV hypokinesia as a
diagnostic tool in myocarditis.
Changing Trends in Management of
346
Congestive Cardiac Failure: The Dor-type
Procedure for an Atypical Large InferoPosterior Wall True Aneurysm Masquerading
As Congestive Cardiac Failure
Binoy John, N Madhu Sankar, Mohammed Mustaffa,
Pramod K Jaiswal, BR Jaganath, KM Cherian
International Center for Cardiothoracic and Vascular Diseases,
Chennai
In the current era of interventional therapeutics and
surgical re-vascularization, there has been a dramatic decline
in the incidence of left ventricular (LV) aneurysms and the need
for aneurysmectomy. So also, with increasing survival rates,
there has been a change in the cardiac patient profile with a
rise in the number of patients with congestive cardiac failure.
Thus there has come the evolution of various LV
reconstruction surgeries as the Dor procedure and also nonsurgical methods as cardiac re-synchronization therapy. The
Dor-type repair is a technique, which excludes the infarcted
segment with a patch restoring the overall LV shape to as close
to normal as possible. LV true aneurysms are a known
complication of myocardial infarction. But 4/5 involve the
antero-apical wall with a four times more frequency in this
wall than the infero-posterior wall. We report the case of a 59
years old diabetic, hypertensive male who suffered an
inferoposterior myocardial infarction 15 years back, and was
on medical management. He had presented with class III
exertional dyspnea and symptoms of congestive failure.
Clinical examination revealed a heart rate of 98/min and a
systemic blood pressure of 100/80 mmHg elevated venous
pressure with prominent V and Y waves, pitting pedal edema,
loud P2 and LV S3 gallop. Echocardiogram revealed regional
wall motion abnormality (RWMA) with a large inferoposterior
true aneurysm, moderate mitral regurgitation, mild tricuspid
regurgitation and pulmonary artery (PA) systolic pressure of
50 mmHg and LV ejection fraction of 39%. In view of the above
profile, an oximetry and right heart pressure study was done
which revealed a PA diastolic pressure of 20 mmHg and cardiac
index of 1.9 L/min/m 2. Coronary angiogram revealed
significant left main and triple vessel disease and left
ventriculogram defined the infero-posterior wall aneurysm. He
was subsequently treated with coronary artery bypass graft
(CABG) surgery with 4 grafts and Dor-type repair. The
aneurysm was seen to be abutting onto the posterior annulus
of the mitral valve and also had dense pericardial adhesion to
the diaphragm. The aneurysm was opened along the inferior
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Indian Heart J 2005; 57: 512–525
Cardiomyopathy and Heart Failure 513
margin and a Gore-Tex patch was sutured to exclude the
aneurysm and the sac was closed over the patch. The postoperative course was uneventful. At discharge there was an
improvement in the end-diastolic and systolic volumes and LV
ejection fraction was 50% and he was in NYHA class II. Our
study describes the changing trends in the profile of patients
in clinical practice and how an uncommon infero-posterior
true LV aneurysm compromised the LV function and also the
functional class. In addition to re-vascularization procedures
LV reconstruction surgeries can provide better functional
status and improvement in the quality of life and most
importantly, delay the deterioration to intractable congestive
cardiac failure.
Effect of a Simple Intervention by Intensive
Telephonic Management on the Quality of
Life in Patients with Heart Failure
347
K Ramachandran, N Husain, R Maikhuri, S Seth, A Vij,
Balram Airan, KS Reddy, D Prabhakaran
Patient counseling, promotion of compliance, and
aggressive drug therapy lead to improved outcome in patients
with congestive heart failure (CHF) resulting in reduced
symptoms and a better quality of life. We assessed the
effectiveness of using telephonic case management
intervention in improving the quality of life of heart failure
patients, a form of non-pharmacological intervention, which
has not been tried earlier in a developing country like India.
Patients followed up at the heart failure clinic were randomized
into two groups (25 patients each). Control group was
managed in a heart failure clinic in a routine fashion (patients
received advise regarding fluid management and drugs). The
intervention group in addition to the routine management,
received the following interventions: (i) 1-hour interactive
session with patient and spouse on the disease, the rationale
of the drugs being used and their side effects, (ii) Training in
self management of fluid intake and diuretic dose- adjustment,
(iii) Weekly telephonic advice and emergency consultation
through a telephonic help-line. The quality of life was assessed
using the Kansas City Cardiomyopathy questionnaire. The
questionnaire was evaluated (Max score123) in all patients at
1st visit and after 2 months. There was significant
improvement in the quality of life of the patients in the
intervention group as compared to those in the control group.
(i) Intervention group - 1st visit score: 83.43±5.11; 2-month
score: 100.27±5.1 (p < 0.05). (ii) Control group - 1st visit
score: 87.04±4.01; 2-month score: 89.25 ±7.89. This study
demonstrates that in the setting of a developing country, the
improvement in quality of life by intensive management of
heart failure patients through telephonic means is greater than
that usually achieved with pharmaceutical therapy in a
routine heart failure clinic.
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NT- ProBNP as a Primary Diagnostic Tool for
the Evaluation of Dyspnea
348
Misdiagnosis of heart failure is common in the urgent care
setting using clinical diagnostic tests. Many studies have shown
that N-terminal probrain natriuretic peptide (NT-proBNP) is a
proven diagnostic marker for heart failure. The manner in
which it is to be used is still being unraveled. The purpose of
this study was to identify the utility of NT-proBNP to categorize
the cause of dyspnea as cardiac or respiratory and to define a
cut off point with maximum accuracy to differentiate the two;
to correlate NT-proBNP levels with the degree of left
ventricular (LV) systolic dysfunction as assessed by an
echocardiogram; and to study the impact of renal failure on
NT-proBNP values. This was a retrospective study in which
NT-proBNP levels in patients with NYHA class IV dyspnea were
compared with the diagnosis in the emergency department in
relation to the final diagnosis. Using ROC analysis, a cut off
point was determined to differentiate cardiac and respiratory
dyspnea. NT- proBNP was significantly higher in patients with
cardiac dyspnea. NT-proBNP level of 3000 pg/ml had the
highest diagnostic accuracy to differentiate cardiac and
respiratory dyspnea. It is concluded that NT-proBNP is an
accurate diagnostic test for the detection and exclusion of heart
failure in dyspneic patients in the urgent care setting.
Brain Natriuretic Peptide and Troponin-I
Levels in Systolic Heart Failure for
Prognostification
349
GN Prasad, Pramod Jaiswal, Pradeep Nayar,
Joy M Thomas, K Jai Shankar, PP Mohd Mustaffa,
Binoy John, KM Cherian
International Centre for Cardiovascular & Thoracic Diseases, Chennai
Plasma brain natriuretic peptide (BNP) and troponin-I levels
are elevated in systolic heart failure. We report 160 patients
of systolic heart failure with NYHA class II–IV symptoms and
ejection fraction (EF) of <40%. Patients were on antifailure
medications [digoxin, diuretics, angiotensin-converting
enzyme inhibitors (ACEI), angiotenin receptor blockers (ARBs),
beta-blockers] based on clinical symptoms. All patients had
undergone transthoracic echocardiography (TTE) with
Doppler velocities [E/A ratio, E/Ea ratio, E deceleration time
(EDT), ejection fraction (EF) (modified Simpson’s method).
Plasma levels of BNP and troponin-I were estimated on
admission and once in 2–3 months for a period of 13 months.
BNP levels ranged from 68.02 to 4200 pg/ml and troponin-I
levels 0.06 to 0.23 ng/ml. Mean left ventricular ejection
fraction (LVEF) was 34±6%, E/A ratio 1.8±3, E/Ea ratio
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Indian Heart J 2005; 57: 512–525
8.6±0.5; EDT 152±2 ms. It was found that 86% of patients
with elevated BNP correlated with NYHA clinical symptoms
and Doppler velocities, whereas only 9% of patients with
elevated troponin-I levels did correlate with clinical symptoms.
Further, the patients with BNP levels >2000 pg/ml had worse
prognosis despite optimal medical treatment. Plasma BNP
levels would be more useful in risk stratification and predicting
prognosis.
Heart Failure: Gender Differences
A Sheela, K Sujit, B Isaac, MJ Santosh, GG Shetty,
K Varghese, CB Patil, SS Iyengar
350
St John’s Medical College Hospital, Bangalore
Gender-based differences have been reported in the
manifestations and management of various medical maladies
including heart failure. We studied the data of heart failure
patients to see the differences in the clinical profile and medical
management between women and men. The study evaluated
heart failure patients [309 (43%) women, 405 (57%) men],
included in the prospective heart failure registry data between
January 2003 and May 2005. Mean age was 56.5±17.6 years
for women and 58.2±14.6 years for men. While valvular heart
disease (n=58, 18.8% v. n=43, 10.6%, p=0.002) and dilated
cardiomyopathy (n=67, 22% v. n=61, 15%, p=0.02) were seen
more often in women, coronary artery disease (CAD) (n=144,
46% v. n=273, 67.4%, p≤0.001) was more common in men.
Smoking, alcohol ingestion, dyslipidemia and renal
dysfunction were more frequently seen in men (n=264, 65%
v. n=11, 3.5%, p<0.001; n=138, 34% v. n=6, 1.9%, p<0.001
; n=296, 73% v. n=203, 65.7%, p=0.03; and 9.0% v. 0.9%,
p=0.01, respectively). There were no significant differences in
NYHA class at presentation, hypertension, diabetes, chronic
obstructive airway disease or cerebrovascular event. More
women (n=148, 47.9% v. n=124, 30.6%, p≤0.001) had
preserved left ventricular (LV) systolic function [left ventricular
ejection fraction (LVEF) >40%] compared to men. Incidence
of atrial fibrillation (n=59, 19% v. n=37, 9.5%, p<0.001) was
more frequent in women. There was no significant difference
in the usage of angiotensin-converting enzyme (ACE)
inhibitors, angiotensin receptor blockers, antialdosterone
drugs, diuretics, beta-blockers, nitrates and statins. But aspirin
(n=222, 71.8% v. n=340 ,83.9%, p<0.001) and clopidogrel
(n=127, 41.1% v. n=218, 53.8%, p<0.001) were used more
frequently in men. No significant difference was noted in the
mortality between the two groups. To conclude, women with
heart failure as compared to men have more often valvular
heart disease and dilated cardiomyopathy as the underlying
cause. Preserved LV systolic function and atrial fibrillation were
more common in women. There was no gender bias bias in
the use of anti-failure pharmacotherapy.
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Left Ventricular Diastolic Dysfunction:
A Valuable Predictor of Prognosis in Heart
Failure Patients
351
Kapil Chattree, TM Jaison, Charles T Itty, Stephen Quadir
Christian Medical College, Ludhiana
Left ventricular (LV) systolic dysfunction has been used as
a prognostic indicator in patients with heart failure. We
prospectively evaluated the role of LV diastolic dysfunction in
predicting the prognosis in heart failure. Eighty-six consecutive
patients admitted with heart failure to our ICCU were studied
with clinical and echocardiographic evaluation. Mean followup was 6.1±1.6 months. Patients had a mean age of
60.02±12.9 years with 55 (64.0%) males and 31 (36.0%)
females. LV diastolic dysfunction was present in 59 (68.6%)
patients. Among these 19 (22.1%) patients had isolated
diastolic dysfunction whereas 40 (46.5%) patients had
associated LV systolic dysfunction. Impaired relaxation pattern
was seen in 17 (19.8%) patients, pseudo normal in 8 (9.3%)
patients and restrictive filling pattern in 34 (39.5%) patients.
Mitral deceleration time (DT) was significantly lower in patients
in NYHA class III and IV (n=59) compared to those in NYHA
class II (n=26) (215.29 ±88.12 ms v. 293.46±68.84 ms;
p=0.0001). More patients with restrictive diastolic dysfunction
were in NYHA class III and IV (n=30, p=0.0136) compared
to those with lower grades of diastolic dysfunction. More
patients in diastolic dysfunction group needed >2 days of ICCU
treatment (n=20, p=0.0161). Similarly, more patients in the
diastolic dysfunction group required >7 days of hospital stay
(n=15, p=0.0013). Significant number of patients with
diastolic dysfunction received ventilatory support (n=24,
p=0.0047). In-hospital mortality was higher in patients with
restrictive diastolic dysfunction (n=10) compared to those with
lower degrees of diastolic dysfunction (n=2) (p=0.042).
Patients who had event-free survival (no death, readmission
or worsening heart failure) on follow- up tend to have longer
mitral DT (n=39) compared to others (272.63±83.51 ms v.
229.95±79.69; p=0.0485). We conclude that the
echocardiographic analysis of diastolic function is very
valuable in predicting prognosis in heart failure patients being
admitted to hospital.
Value of N-Terminal Pro-Brain Natriuretic
Peptide for Identifying High Risk Patients
with Heart Failure in the Intensive Care Unit
352
TM Jaison, Charles T Itty, Kapil Chattree
N-terminal pro-brain natriuretic peptide (NT-proBNP) is a
marker of left ventricular dysfunction. We assessed the
usefulness of NT-proBNP to identify high risk heart failure
patients in the critical care setting. We prospectively studied
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Indian Heart J 2005; 57: 512–525
86 consecutive patients admitted in our intensive coronary
care unit (ICCU) with heart failure. Mean age of the patients
was 60.2±12.9 years. There were 55 (64.0%) males and 31
(36.0%) females. All patients underwent complete clinical
evaluation, echocardiography and NT-proBNP estimation on
admission. Mean follow-up was 6.1±1.6 months. Twenty-six
(30.2%) patients were in NYHA class II (NT-proBNP:
3610.83±7368.15 pg/ml) while 34 (39.5%) were in class III
(8454±12551.82 pg/ml) and 26 (30.2%) in class IV
(12605±13734.94 pg/ml). NT-proBNP levels were
significantly high in those in higher NYHA classes (p=0.0033).
Those with higher transmitral early diastolic velocity/tissue
Doppler early diastolic mitral annular velocity (E/Ea) ratio had
elevated NT-proBNP levels (E/Ea≥14, n=32, NT-proBNP =
10519.97± 13690.90 pg/ml v. E/Ea<14, n=47, NT-proBNP=
6099.55±9483.87 pg/ml; p=0.0291). Those with higher
degrees of diastolic dysfunction had significantly higher levels
of NT-proBNP (impaired relaxation group: n=15, NT-proBNP
2777.8±6150.11 pg/ml; pseudonormal group: n=8, NTproBNP 4088.88±5801.41 pg/ml; Restrictive group: n=34,
NT-proBNP 11624.62±13746.49 pg/ml; p=0.015). Patients
who developed ventricular tachycardia (n=17, NT-proBNP
15859.59±15525.79 pg/ml) had higher NT-proBNP levels
compared to others (n=64, NT-proBNP = 6227.33±10156.83
pg/ml; p=0.001). Patients who required ventilatory support
(n=26) had higher NT-proBNP levels (13688.77± 14530.49
pg/ml v. 5677.35±9804.29 pg/ml; p=0.0012). Those who
had higher NT-proBNP levels needed longer stay in ICCU (>2
days, n=23, NT-proBNP = 12529.65±12301.87 pg/ml v. ≤2
days, n=49, NT-proBNP = 5696.37±10613.19 pg/ml;
p=0.0181). Patients who had adverse events (death,
readmission or worsening heart failure) on follow-up (n=24)
had significantly higher NT-proBNP levels compared to others
(12561.58± 12824.91 pg/ml v. 5015.62±8783.80 pg/ml;
p=0.001). In conclusion, higher NT-proBNP levels on
admission in heart failure patients points to increased risk for
complications during hospital stay and on follow-up.
Evaluation of Effect of Nebivolol on Left
Ventricular Functions in Patients with Heart
Failure
353
A Lalchandani, P Sondhi, SK Saxena, RK Bansal,
NN Khanna, A Agarwal, V Agarwal, P Neelam
LPS Institute of Cardiology, GSVM Medical College, Kanpur
Large randomized trials have shown that beta-blockers
reduce mortality and hospital admissions in patients with
heart failure. But each beta-blocker in heart failure need to be
evaluated separately and the effects of one cannot be
extrapolated to another. This study evaluated the efficacy of
the new β-blocker nebivolol on left ventricular (LV) function
in patients with heart failure. Study was conducted on 47
G.p65
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patients of heart failure in our institution. All patients received
stable conventional therapy for heart failure, and were
randomly assigned to double-blind treatment with either
nebivolol (n=25) or placebo (n=22 patients) and were followed
for a period of 12 weeks. Heart rate, systolic and diastolic blood
pressure and echocardiographic parameters of LV function
were recorded at baseline and after 12 weeks of therapy.
Nebivolol was well tolerated and the NYHA class improved in
all patients. Heart rate decreased significantly (p<0.005). LV
systolic function improved [ejection fraction (EF) 39.2±7.2%
to 44.2±5.2%, p<0.005, stroke volume (SV) from 66.7±11.1
to 79.2±13.2, p< 0.005)]. LV diastolic function improved
(increase in peak E (cm/s) from 59±10 to 64±8, p< 0.05, E/A
ratio from 1.30±0.41 to 1.44±0.32, p <0.05) after 12 weeks
of nebivolol. The present study shows that Nebivolol is well
tolerated and improves LV systolic and diastolic function in
patients with heart failure.
Effect of Nebivolol on Circulating
N-Terminal Pro-Brain Natriuretic Peptide
Levels in Patients with Heart Failure
354
A Lalchandani, P Sondhi, R Chandra, NN Khanna,
A Agarwal, G Preethi, V Agarwal, M Shameem
Post Graduate Institute of Medicine, GSVM Medical College and
Escorts Heart Centre, Kanpur
Plasma brain natriuretic peptide (BNP) levels and cardiac
autonomic functions are strongly related to severity of, and
are independent predictors of outcome in patients with heart
failure. The long-term effects of nebivolol on BNP in heart
failure patients are yet not known. This study examines the
effects of nebivolol compared to placebo on plasma
concentrations of NT-proBNP in patients with heart failure.
This study enrolled 47 patients of heart failure attending our
outpatient department or admitted to our hospital. In addition
to history, clinical examination and echocardiographic
evaluation, the baseline and follow-up concentrations of NTproBNP were measured using electrochemiluminescene
method. All patients received stable conventional therapy for
heart failure, and were randomly assigned to double-blind
treatment with either nebivolol (n=25) or placebo (n=22) and
were followed for a period of 12 weeks. NT-proBNP
concentrations were increased at baseline: 656.2±764.1
pmol/L, median: 335 pmo/L). There was marked decrease
(31.27%) in NT-proBNP concentration in nebivolol group at
12 weeks (469.5±547.9 pmol/L, median: 216 pmol/L) as
compared to placebo group in which the fall was just 11.21%
from the baseline. Nebivolol improves cardiac function in
patients with reduced left ventricular function. NT-proBNP
could be used not only for risk stratification and monitoring
of therapy in heart failure, but also for evaluation of efficacy
of different β-blockers in heart failure.
11/24/2005, 11:11 AM
Indian Heart J 2005; 57: 512–525
Hypertrophic Cardiomyopathy - Profile and
Varied Presentation: Experience at a Teritary 355
Care Centre
Effect of Carvedilol on Functional Capacity
and Cardiac Output in Patients with
Cardiomyopathy
K Chawla, M Basarge, P Singh, S Dhanlaxmi, S Selvirani
G Prathap Kumar, RA Janarthanan, S Palanichamy,
V Amuthan, S Murugan, S Balasubramanian,
S Naina Mohamed, S Balashankar, P Kannan, G Jeyakumar,
M Anandan
Baroda Heart Institute and Research Centre, Vadodara
Hypertrophic cardiomyopathy is (HCM) commonly
undiagnosed condition until completely evaluated at a wellequipped centre. It has varied clinical presentations. Various
diagnostic modalities are now available to assist the clinician.
In an institutional review, this study was done on HCM patients
attending OPD or admitted at our institute. The study period
was of 2 years from January 2002 to December 2004. Data
was analyzed with regards to demography, HCM type
[hypertrophic obstructive cardiomyopathy (HOCM),
hypertrophic non-obstructive cardiomyopathy (HNOCM)
hypertrophic apical cardiomyopathy (HACM)] , and HCM with
unusual findings. Detailed history, examination, routine
investigation, electrocardiogram (ECG), 24-hour Holter
monitoring, echocardiography was done. Those having
associated congenital heart disease (CHD), rheumatic heart
disease (RHD), and infective endocarditis (IE) were included in
this study. Of the total patients, 55 were diagnosed to have HCM
(1.12%) by echocardiography; 67% (n=37) were males and
33% (n=18) were females. Age range was 2 months to 79
years. Positive family history was noted in 7 (12.7%) cases.
Symptomatic disease was seen in 64% cases, of which chest
pain predominated (77%), followed by dyspnea (60%), syncope
(42%) and palpitation (28%). Clinico-electrocardiographically,
atrial arrhythmias was in 3 patients, ventricular arrhythmias
in 35 (frequent VPCs, couplet, bigeminy) and complete heart
block (CHB) in 1. Left ventricular hypertrophy (LVH) with
strain pattern (80%), mean QRS voltage: 42mV, giant T
inversions in V2-V5, I and aVL leads in 4 cases. None of the
patients had history of sudden cardiac death (SCD).
Echocardiographic analyses revealed: (a) HCM: 50%, (b)
HOCM: 32%, (c) HACM: 7%, (d) Associated subaortic
membrane: n=2, (e) HCM with RHD: n=1 pt, (f) HCM with
tricuspid valve prolapse (TVP) n= 1 and IE+ mitral valve
prolapse (MVP): n=1. ASH in 96% and SAM in 100%.
Biventricular involvement was seen in 2 patients. Diastolic
dysfunction was found in 50% cases. Mean LV mass was 204
gm/m2. Valvular lesions included: mitral regurgitation (MR)
70%, aortic regurgitation (AR) 05% & tricuspid regurgitation
(TR) 21%. HCM with mitral stenosis (MS): n=1. Mean resting
LV outflow tract gradient was 70 mmHg (20-120 mmHg).
Dobutamine-provocated gradients were also studied when
resting LV outflow tract gradients were <50 mmHg.
Angiographic coronary artery disease (CAD) was found in 25%
cases specially in age group > 45 years. None of the cases had
acute coronary event. HCM is not an uncommon disease entity.
It has varied presentations and needs clinical acumen for
diagnosis as also the expert diagnostic armamentarium.
G.p65
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356
Madurai Medical College and Government Rajaji Hospital, Madurai
The aim of the study was to establish the potency and
efficacy of carvedilol in improving the cardiac output and
functional capacity in patients with left ventricular (LV) systolic
dysfunction. Twenty patients in the age group 23 to 60 years
were enrolled in the study of which only 18 completed the
study. Ten patients had dilated cardiomyopathy (DCM) and the
rest, ischemic cardiomyopathy. On entry, baseline
echocardiographic evaluation was done and end-diastolic
volume (EDV)/end-systolic volume (ESV)/left ventricular
ejection fraction (LVEF)/cardiac output/tricuspid regurgitation
(TR) gradient were calculated for all patients. Functional
capacity estimation was standardized as number of seconds
the patients were able to walk on a treadmill at 2.5 MPH and
10° grade. Eccentricity index was calculated in all patients as
the ratio of LV long axis length and short axis length in apical
2 chamber view. All patients were started on 3.125 mg twice
daily of carvedilol and stepped up at biweekly intervals up to
12.5 mg twice daily. After 6 weeks, patients were reevaluated
with echocardiography and functional capacity assessed on
the treadmill as before. Among the DCM patients there was a
significant increase in LVEF from 40.3±4.62% to
48.3±5.01%. Similarly the cardiac output also improved from
3.56±0.27 L/min to 3.99±0.34 L/min. The functional
capacity increased from 197.9±98.6 s to 373.7±108.14 s. TR
gradient decreased from 42.7±8.17 mmHg to 32.6±6.77
mmHg. Among the ischemic cardiomyopathy group, LVEF
increased from 37.75±3.88% to 45.25±4.95%, cardiac
output also increased from 3.37±0.38 L/min to 3.83±0.37
L/min. Functional capacity showed an increase from
371.5±83.145 s to 514.88±58.74 s. There was also a
significant decrease in TR gradient from 52.37±9.9 to
40.25±10.43 mmHg.The eccentricity index did not show
significant change, probably more time might be needed for
favorable improvement in geometry. The statistical analysis
was done using paired t test.
Dilated cardiomyopathy
Ischemic cardiomyopathy
LVEF
(%)
CO
(L/min)
Func.
Cap(s)
TR PG
(mmHg)
LVEF
(%)
CO
(L/min)
Func.
Cap(s)
TR PG
(mmHg)
Pre
40.3±
4.62
3.56±
0.27
197.9±
98.6
42.7±
8.17
37.75±
3.88
3.37±
0.38
371.5±
83.14
52.37±
9.9
Post
48.3±
5.01
<0.002
3.99±
373.7±
0.34
108.14
<0.0009 <0.0003
32.6±
6.77
<0.001
45.25±
4.95
<0.008
3.83±
0.37
<0.003
514.88± 40.25±
58.74
10.43
<0.001
<0.0002
p value
LVEF: left ventricular ejection fraction; CO: cardiac output; TR: tricuspid regurgitation, PG: peak
gradient
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Indian Heart J 2005; 57: 512–525
Natural History of 142 Cases of Hypertrophic
357
Cardiomyopathy
Adarsh Kumar, RK Sharma, Harharpreet Kaur,
Varun Mohan
Government Medical College, Amritsar
In last 9 years, 142 cases [males: 96, (67.6%); females: 46
(32.4%)] of hypertrophic cardiomyopathy(HCM) were
examined. The diagnosis was based on clinical examination,
electrocardiogram (ECG) and detailed echocardiographic
evalation. Age of presentation was 18.7-72.6 years (mean:
46.2 years). Follow-up period ranged from 34.3 months-96.4
months with median period of 60.4 months. Palpitation,
angina, shortness of breath and syncope were the commonest
presentations (76%; 46; 3%; 39.2%; 11.3%, respectively) with
2 (1.4%) patients presenting with sudden cardiac death (SCD)
from which both were resuscitated in coronary care unit (CCU).
On ECG 39.6% cases had left ventricular hypertrophy (LVH);
20.4% cases had non-Q infarct like presentation; 5 (3.5%)
cases presented with ventricular tachycardia (VT); 5 (3.5%)
had atrial fibrillation (AF) and 3 (2.1%) with supraventricular
tachycardia (SVT). On echocardiography, asymmetrical septal
hypertrophy (ASH) was seen in 63/142 (44.4%); concentric
LVH in 61/142 (42.9%); apical hypertrophy in 13/142 (9.2)
and left ventricular posterior wall (LVPW) hypertrophy in 5/
142 (3.5%). Systolic anterior motion (SAM) of mitral valve
was seen in 59/142 (41.5%) cases and significant left
ventricular outflow tract (LVOT) gradient in 26/142 (18.3%)
(all had SAM). Mitral requrgitation (MR) grade IV seen in 80/
142 (56.3%). All the patients were empirically put on longterm amiodarone therapy 100-400 mg per day, in addition to
other symptomatic treatment. One patient resucitated from
SCD due to recurrent VT, and had to be given automatic
implantable cardioverter defibrillator (AICD). Only 5 (3.5%)
patients died during this long follow-up period with all of them
symptomatic - 2 having recurrent VT; 2 having severe diastolic
LV dysfunction and 1 had rerfactory angina. To conclude, HCM
runs a relatively benign course on long-term basis and
mortality rate is not high as was previously thought. Longterm amiodarone therapy perhaps provides survival benefits.
Atorvastatin Reduces Inflammatory Marker
in Dilated Cardiomypathy and Improves Long- 358
Term Outcomes
UK Saha, DP Sinha, M Das, M Panja
Institute of Post Graduate Medical Education and
Research & SSKM Hospital, Kolkata
Patients with dilated cardiomyopathy (DCM) have poor
prognosis despite all available treatments. Statins have been
shown to reduce the risks of future cardiovascular events.
Atorvastatin reduces the level of high-sensitive C-reative
protein (hsCRP) independent of its lipid lowering effects. The
present study was designed to see the effects of atorvastatin
on hsCRP in patients of DCM and its long-term outcomes.
G.p65
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Forty-six patients of DCM with stage II/III heart failure were
randomly assigned either to receive atorvastatin at dose of 40
mg/day in addition to their conventional treatment or to
continue their usual drug treatment for 18 months. Patients
were evaluated at baseline and at 6, 12 and 18 months with
clinical examination, biochemical analysis, fasting blood sugar
(FBS), lipid profiles, creatinine, liver enzymes and hsCRP and
echocardiography; 23 patients received atorvastatin (Group
I) and rest 23 served as control (Group II). Baseline clinical,
biochemical and echocardiographic parameters were
comparable in both groups. Atorvastatin added to usual
treatment significantly improved the patients functional status
as assessed by NYHA functional class although the mean left
ventricular ejection fraction (LVEF) were not improved
significantly in comparison to control. It also reduced hsCRP
and low-density lipoprotein (LDL-c) levels. No significant
adverse effect or change in liver enzymes were noted.
Parameters
Functional
class (average)
Grade-II
Grade-I
Groups
Baseline
6 mo
12 mo
18 mo
LDL-c (mg/dl)
Grade-I
2.70
31
Grade-II
Grade-I
Grade-II
94.08±
hsCRP (mg/dl)
Grade-I
Grade-II
0.33±
2.74
2.78
34
32
96.13±
18.53
96.04±
17.19
0.34±
0.29
0.34±
0.32
2.61
2.81
34
34
90.21±
16.23
99.95±
14.01
0.24±
0.19
0.37±
0.31
2.14
2.00
2.80
LVEF (%)
35
35
34
82.69± 68.23±
12.29 13.21
103.65±
14.63 13.66
0.21± 0.18±
0.20
0.21
0.39±
0.27
0.26
Treatment with atorvastatin for long-term in patients of DCM
resulted in symptomatic improvement in functional class and
also in reduction of inflammatory marker. However, LV
function as measured by echocardiography is not improved
significantly when compared with controls.
Atorvastatin Alone/in Combination with CoEnzyme Q10 in 108 Cases of Ischemic Dilated 359
Cardiomyopathy
Adarsh Kumar, Harharpreet Kaur, Sunil Kumar,
Varun Mohan, Pushpa Devi
Government Medical College, Amritsar
In addition to their lipid modulatory effects, statins may be
helpful in heart failure (HF) due to ischemic dilated
cardiomyopathy (DCM), because of their effect in endothelial
function, ventricular remodeling and suppression of cytokine
release. Very few patients are given statins in HF due to fear of
reducing the coenzyme (CoQ) 10 levels and depression of
mitochondrial respiratory chain mechanism although this
clinical effect is not proven. This study was taken up to evaluate
the role of statins alone or in combination with CoQ 10 in HF
due to ischemic DCM (diagnosed by previous history of angina/
myocardial infarction (MI), and by echocardiographic evidence
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of global LV hypokinesia/EF<30%). In 108 treated cases
(Group I) (male-female ratio was 67/41-62.1%/37.9%; aged
38.3-76.4 years; mean: 54.5 years). Study cases of Group I,
54 (50%) were given 20 mg atorvastatin daily in addition to
the standard treatment of digoxin, angiotensin-coverting
enzyme (ACE) inhibitors and beta-blockers etc. (Group IA) and
54 (50%) were given atorvastatin and 100 mg CoQ10/day
combined with conventional therapy (Group IB).
Simultaneously 96 age/sex matched cases were given only
routine treatment for the same period (Group II). The mean
follow-up period was 11.4 months. The end points were improvement in quality of life, by 6 min walk test, reduced
number of hospitalizations, improvement in left ventricular
ejection fraction (LVEF) by ≥5% at the end of study period and
mortality benefits. The atorvastatin alone (Group IA) caused
symptomatic improvement in 48.15% and in Group IB it was
59.25% whereas it was 25% in control Group II (p<0.02).
LVEF improved by ≥5% in 9.26% of Group I A, in 14.32% of
Group IB and only in 3.12% (p< 0.02) in controls. Mortality
benefit was statistically insignificant.
Side effect
Statin alone
Group IA
Statin+CoQ10
Group IB
Muscle fatigue/myalgia
Severe myopathy
Hepatic enzyme abnormality
Stoppage of drug therapy due
to side effects
5/54 (9.26%)
1/54 (1.85%)
1/54 (1.85%)
2/54 (3.70%)
1/54 (1.85%)
0/54 (0)
0/54 (0)
0/54 (0)
Addition of statins in treatment of HF due to ischemic DCM
leads to significant improvement in clinical class and in LV
dysfunction. CoQ10 adds further benefits.
Effect of Beta-Blocker Therapy on Tei Index
in Ischemic Cardiomyopathy
360
CV Arunavalli, ST Yavagal, CN Manjunath
Beta-blockers used in stable heart failure reduce mortality
and frequency of hospitalizations by neurohumoral
antagonism and by preventing the downregulation of beta 1
receptors. We studied the effect of carvedilol on global left
ventricular (LV) function as assessed by tissue Doppler-derived
Tei index. From July 2004 to January 2005, 40 patients with
ischemic cardiomyopathy [known coronary artery disease
(CAD) and left ventricular ejection fraction (LVEF) <30%] were
included in the study. Male- female ratio was 1.8:1 (26 patients
were males, 14 were females). Twenty-two (55%) patients were
diabetics, 8 (20%), were hypertensive. Only 15 (37.5%)
underwent prior coronary angiogram-triple vessel disease in
8 (20%), double vessel disease in 7 (17.5%). None of the
patients underwent coronary interventions. The mean
duration from acute coronary event to current presentation
was 3.6 years. All patients were in NYHA class IV at
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presentation. Thirty-four patients (85%) had pure LV failure,
6 (15%) had biventricular failure. After initial stabilization with
intravenous (IV) dobutamine, angiotensin- converting enzyme
(ACE) inhibitors, IV diuretics, and digoxin for one to two weeks,
all patients were started on carvedilol at a dose of 3.125 mg
twice daily, with step-up of dosage every two weeks. The
maximal dosage achieved was 25 mg twice daily. 2D
echocardiograms and Doppler tissue imaging (DTI) were
performed initially on all patients, using an Agilent Sonos
5500 (Philips) machine. The average LVEF was 28% and
average Tei index was 48%. The patients were followed over
six months. Six patients experienced worsening of heart
failure, requiring stoppage of the drug. At the end of 6 months,
15 patients (40%) improved to NYHA class III and 10 (25%)
improved to class II. The average improvement in LVEF was
7.4%. Tei index improved in all patients. Average decrease of
Tei index was 11%. Four patients were lost to follow-up. Five
patients required repeat hospitalization for exacerbation of
heart failure. We conclude that beta-blocker therapy in
ischemic cardiomyopathy improves the functional status and
global (i.e, systolic and diastolic) LV function as assessed by Tei
index.
Isolated Noncompaction of Left Ventricle: A
Common Cause of Adult Dilated
Cardiomyopathy
361
A Bahl, A Swamy, HK Bali, YP Sharma, R Vijayvergiya,
M Rohit, A Grover, KK Talwar
Chandigarh
Isolated noncompaction of left ventricle (ILNC) is being
increasingly recognized as a cause of left ventricular (LV)
dysfunction in adults. The prevalence of INLC and the scope
of the problem is not known. The aim of this study was to
determine the clinical spectrum of ILNC and its prevalence in
an adult patient population with non-ischemic dilated
cardiomyopathy. All adult probands with non-ischemic left
ventricular systolic dysfunction and left ventricular ejection
fraction (LVEF) less than 40% presenting over a 21 month
period were screened echocardiographically for ILNC. Seventyseven patients met the inclusion criteria for non-ischemic LV
systolic dysfunction. Of these 17 (22.1%) were found to have
ILNC. The mean age of patients with ILNC was 37.9±14.8
years. Eleven (64.7%) were males. Presentations included
peripartum cardiomyopathy, preexcitation and complete heart
block. Associated conditions included facial dysmorphism,
Dupuytren's
contracture
and
hypothyroidism.
Noncompaction was restricted to the LV apex in 13 (76.5%)
individuals. ILNC is a common cause of non-ischemic LV
systolic dysfunction and is found in over one-fifth of adult
patients with the condition. It has a heterogeneus presentation
and can present as acute or chronic heart failure, peripartum
cardiomyopathy, complete heart block or facio-noncompaction
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syndrome. It is most commonly segmental and localized
involving only the apex. Careful echocardiogaphic screenng
of the apical segments is essential to identify this condition.
Histomorphological Features and
Immunohistochemical Characterization of
Inflammatory Cells in Dilated
Cardiomyopathy: An Autopsy Study
362
Uma Nahar Saikia, Bhupinder Kaur, Ajay Bahl,
KK Talwar, K Joshi
Post Graduate Institute of Medical Education and Research,
Chandigarh
A total of 10 cases of dilated cardiomyopathy (DCM) which
met the diagnostic criteria were retrieved from the autopsy files
over a period of 5 years with male-female ratio of 2.3: 1. The
age ranged from 6 months to 53 years with 3 pediatric cases.
Five cases presented with congestive cardiac failure of which
3 had history of preceding fever with clinical suspicion of
myocarditis. Cardiomegaly was seen in 7 cases on chest X-ray.
At autopsy gross examination revealed enlargement of the
heart in all the cases. Biventricular dilation was noted in 3 cases
and the remaining cases had four-chamber dilation and
enlargement. Right auricular thrombosis was seen in 6 cases.
Endocardial thickening and fibrosis were noted in 4 cases, more
prominent on the right side. The coronaries did not show
significant narrowing in any of the cases. Microscopic
examination revealed epicardial, myocardial and interstitial
mononuclear infiltrate in 6 cases where the predominant cell
population was CD68+ by immunohistochemisty (IHC). True
myocarditis with 'T' cell infiltrate (CD3+) was seen in 3 cases
only, of which 2 belonged to pediatric age group. Interstitial
fibrosis was present in seven cases which was moderate in 3
cases and one case showed severe replacement fibrosis.
Myocarditis is a possible cause of DCM and more than half of
our cases (60%) demonstrated interstitial infiltrate which was
predominantly histiocytic in nature. These features may
suggest that the histiocytic infitration may represent resolving
phase of myocarditis. Therefore, IHC may enhance the
sensitivity of endomyocardial biopsy for the diagnosis of
myocarditis for instituting early therapy and thus prevent
mortality.
Differences between Physicians and
Cardiologists in the Management of Chronic
Heart Filure: Relation to Practice Guidelines
G.p65
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shown improved outcomes when patients are managed by
cardiologists or heart failure specialists in special clinics. Most
studies on this topic have been before the publication of HFSA
(Heart Failure Society of America) guidelines in 1999 and
especially in India such an evaluation has never been
considered. The objective of the present study was to ascertain
the differences in practice patterns and compliance to
established HF guidelines among physicians and cardiologists
from diverse locations. A questionnaire examining the
diagnostic and treatment patterns in HF was designed and
responses obtained from 104 cardiologists and physicians.
They were analyzed to bring out the differences between the
two groups and to ascertain their adherence to established
guidelines. Significant differences were seen in the practices
of cardiologists as compared to physicians. Cardiologists were
more likely to use echocardiography as compared to physicians
as the primary modality for diagnosing HF (93.4% v. 59.16%,
p<0.05) whereas physicians were more likely to use chest Xray (40.84 v. 6.6%, p<0.05). Cardiologists ordered coronary
angiography in larger number of patients with HF with history
of angina than physicians (96.6% v. 29.5%). Physicians
expressed more concern in starting angiotensin-converting
enzyme (ACE) inhibitors in patients with raised serum
creatinine >2.5 (35% only started above or at this level as
compared to 63.2% of cardiologists, p<0.05) and were less
likely to initiate them in patients with low systolic blood
pressure (90 mmHg). Cardiologists prescribed higher target
doses of ACE inhibitors and β-blockers (42.8% prescribed 20
mg of enalapril as compared to only 27.65% of physicians
(p<0.05)) (85.17% prescribed ≥100 mg of metoprolol as
compared to 67.05% physicians). Physicians were less likely
to rate the role of water restriction in the management of CHF
as very important and they imposed less stringent salt
restriction when compared with cardiologists. Significant
differences existed between the two groups in the use of
diagnostic modalities, ACE inhibitors and β-blockers where
cardiologists tend to be more aggressive as compared to
physicians. Cardiologists report practices more in conformity
with published guidelines than do physicians. These results
may suggest the need for specialized training of physicians on
the evidence-based management of HF specially in India where
a large number of heart failure patients are being treated by
physicians.
Relationship between N-Terminal ProBrain
364
Natriuretic Peptide and Doppler Estimation
of Left Ventricular Filling Pressure in Patients
with Heart Failure
Vineet Kumar, Sandeep Seth, D Prabhakaran, KS Reddy
Charles T Itty, Kapil Chattree, TM Jaison
All India Institute of Medical Science, New Delhi
Heart failure (HF) is one of the most common causes of
cardiovascular morbidity and mortality. Recent studies have
Transmitral early diastolic velocity/tissue Doppler early
diastolic mitral annular velocity (E/Ea) is a novel method of
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non-invasive estimation of left ventricular (LV) filling pressure.
N-terminal probrain natriuretic peptide (NT-proBNP) is also
correlated with LV filling pressure. We examined the
relationship between NT-proBNP and E/Ea in heart failure
patients during hospital stay and/or short-term follow-up
(mean 6.1±1.6 months). We evaluated prospectively 86
patients admitted with heart failure. Clinical evaluation,
echocardiography and NT-proBNP estimation were done on
admission. Mean age was 60.02±12.9 years with 55 (64.0%)
males and 31 (36.0%) females. LV systolic dysfunction [left
ventricular ejection fraction (LVEF) <45%, mean 33.7±6.0%]
was present in 50 (58.8%) patients. Various degrees of LV
diastolic dysfunction was present in 59 (68.6%) patients of
which 19 had isolated diastolic dysfunction. The mean NTproBNP level was 8248.91±12042.74 (median 1563) pg/ml
and the mean E/Ea ratio was 11.27±4.91 (median 11.0). NTproBNP (10201.79±13106.62 pg/ml and E/Ea (12.79±4.61)
were significantly high in patients belonging to NYHA class
III and IV (n=57) compared to NYHA class II patients (NTproBNP p=0.0082; E/Ea p≤0.0001). Patients requiring
ventilatory support (n=26) had elevated levels of NT-proBNP
(13688.77±14530.49 pg/ml) and higher E/Ea ratios (13.76±
4.94) (NT-proBNP p=0.0012; E/Ea p=0.0014). Both NTproBNP (15859.59±15525.79 pg/ml) and E/Ea
(13.51±5.59) were high in patients who developed ventricular
tachycardia (n=17) (NT-proBNP p=0.001; E/Ea p=0.0336).
Patients who had event-free survival (no death, readmission
or worsening heart failure) on follow-up (n=39) had
significantly lower NT-proBNP (5015.62±8783.80 pg/ml)
and E/Ea (9.04±4.22) values (NT-proBNP p=0.001, E/Ea
p=0.0118). NT-proBNP levels were elevated in patients with
E/Ea>14 (n=32) compared to those with E/Ea<14
(10519±13690.90 pg/ml v. 6099.55±9483.87 pg/ml;
p=0.291). However, on linear regression analysis NT-proBNP
showed little correlation with E/Ea (r=0.22). Non-invasive
estimation of LV filling pressure by E/Ea only poorly correlated
with NT-proBNP levels. However, both parameters are useful
in the identification of high risk heart failure patients with
increased in-hospital and follow-up mortality and morbidity.
Treating Heart Failure: Are Trial Doses of
Drugs Appropriate in Asian Patients?
365
Sim David, KL Chan, Kwok Bernard
National Heart Centre, Singapore
The use of angiotensin-converting enzyme inhibitors (ACEI) blockers to improve mortality and morbidity in heart failure
is well entrenched in evidence-based practice of medicine.
We studied the frequency and dosage of usage of such
recommended drugs, treatment in patients with congestive
heart failure. Between April 2002 and March 2005, 104
consecutive patients in the heart failure outpatients clinic were
studied. Information regarding their demographics, clinical
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features and treatment were retrospectively obtained from case
records. Majority (85%) of the patients were male. Mean age
was 53.4±13.3 years, while the mean left ventricular ejection
fraction (LVEF) was 27%. Ethnic distribution closely mirrors
the national demography, Ninety-nine percent of patients were
prescribed ACE-I or angiotensin-receptor blocker (ARB). Betablocker was given in 89% of patients. Other significant drugs
were spirinolactones: 56%, digoxin: 40% and diuretics: 65%.
Of the 71 patients in Group 1 (ACE-I), only 35% achieved target
doses. Of the 89 patients in Group 2 (recommended betablockers), only 9% achieved target doses. The blood pressure
(BP) and heart rate (HR) in the 2 groups are shown in Table.
In our study cohort, there was a high usage of drug classes
recommended in treatment guidelines. However, most patients
did not achieve the target doses of drugs shown to be effective
in clinical trials probably because it was limited by BP or HR.
We postulate that this is due to physicians' reluctance or fear.
The underdosing of evidence-based therapies is of concern and
warrants to bridge such gaps in clinical practice.
Mean HR
(bpm)
BP
(mmHg)
%achieving
target dose
72±10
71±10
121/75
119/74
35%
9%
Group 1: ACE-I
Group 2: Beta blockers
Impaired Long Axis Dynamics of the Left
Ventricle in Hypertrophic Cardiomyopathy:
Relationship with Wall Thickness and Left
Ventricular Outflow Tract Gradient
366
Vimal Mehta, Ajay Raj, Saibal Mukhopadhyay,
Jamal Yusuf, S Ramakrishnan, Naresh K Goyal,
Manish Sharma, Bishwa Bhushan Bharti, Asit Khanna,
Naveen Bhamri, Vijay Trehan, Sanjay Tyagi
The assessment of left ventricular atrioventricular (AV)
plane displacement (LVAVD) during the cardiac cycle has been
shown to be effective in the evaluation of cardiac function in
normal subjects as well as in some diseased states. However,
LVAVD has not been studied adequately in patients with
hypertrophic cardiomyopathy (HCM). We studied the role of
LVAVD in evaluation of patients with HCM and compared the
data with age- and sex-matched healthy controls. The
relationship of LVAVD to interventricular septal and posterior
wall thickness, left ventricular (LV) outflow tract (LVOT)
gradient and diastolic parameters was also studied. Complete
2D echocardiography and Doppler examination was performed
in 47 HCM patients (34±12 years, 34 males) and 30 age- and
sex-matched controls. Using high frame rate tissue Doppler
imaging, color Doppler myocardial imaging data was obtained
which allows the measurement of LVAVD from the four corners
of the mitral annulus, that is, lateral, septal, anterior and
inferior corner. The interventricular septal and LV posterior
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Indian Heart J 2005; 57: 512–525
wall thickness in diastole in HCM group was 2.6±0.7 cm and
1.5±0.4 cm, respectively. The mean ejection fraction in HCM
group calculated by the Simpson’s rule was 0.67±0.07. Left
ventricular AV plane displacement is shown in table.
HCM
Controls
Lateral
Septal
Anterior
Inferior
8.3 ± 1.4*
12.5 ± 0.9
8.1 ± 1.3*
12.4 ± 1.0
8.3 ± 2.1*
12.3 ± 0.8
8.3 ± 1.9*
12.6 ± 1.0
were found to have lower LA emptying velocity (30±5 v.
55±16) (p<0.05), lower LA filling velocity (40±7 v. 56±15)
(p<0.05), lower LAA EF (27±10.5 v. 45±15). 8 out of 30
(27%) patients had thrombus in the LAA. This study concludes
that all patients with severe LV dysfunction have LAA
dysfunction and increased incidence of thrombus formation.
*HCM v. controls p< 0.001
The LVAVD was significantly less in the HCM group than the
control group (Table) and correlated significantly with the
interventricular septal and LV posterior wall thickness
(p<0.01). Also there was significant correlation of the LVAVD
with the LVOT gradient (p<0.01). However, there was no
correlation between the LVAVD and the ejection fraction
calculated by the Simpson’s rule and the early and late diastolic
velocities. We conclude that the LVAVD is decreased in patients
with HCM compared to controls despite normal ejection
fraction. This impaired LVAVD significantly correlated with
LVOT gradient and the septal and LV posterior wall thickness.
Left Atrial Flow Dynamics in Severe
Left Ventricular Dysfunction
367
T Munusamy, V Jaganathan, R Alagesan, M Annamalai,
A Balaguru, G Anuradha, S Venkatesan, C Moorthy,
G Justin Paul, PS Mohanamurugan, K Meenakshi
Thromboembolic episodes carry a significant mortality and
morbidity in patients with severe left ventricular (LV)
dysfunction. Emboli commonly arise from mural endocardium
and left atrium. Now it is increasingly recognized that left atrial
appendage (LAA) is an important source of thromboembolism.
In this context we studied the left atrial (LA) flow dynamics in
severe LV dysfunction and the relationship of LAA thrombus
formation. This study was conducted in 30 patients with mean
age of 50 ± 8.5 years, all of whom were in severe LV
dysfunction. Patients with valvular heart disease and atrial
fibrillation (AF) were excluded. They were compared with 30
healthy individuals. M-mode, two-dimensional (2D) and
transesophageal echocardiogram (TEE) and tissue Doppler
imaging (TDI) were performed to record the LA flow dynamics
like atrial emptying velocity, atrial filling velocity and left atrial
appendage ejection fraction (LAA EF). LAA EF was calculated
from the maximum minus minimum area of LAA divided by
the maximum area of LAA. LA volume was assessed by the
formula 0.85×A1×A2/L. Patients with severe LV dysfunction
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A Randomized Trial to Study the Effectiveness
368
of a Holistic Approach with Telephonic
Follow-up on Emotional and Social Health of
Heart Failure Patients
R Maikhuri, K Ramachandran, N Husain, M Kumar,
N Srivastav, S Seth, A Vij, A Balram, KS Reddy,
D Prabhakaran
Heart failure (HF) is a progressive, debilitating syndrome
with significant physical and psychological co-morbidities.
Poor quality of life, social isolation, depression and anxiety, all
have been linked to increased risk of re-hospitalization and
mortality in patients with HF. Combating chronic HF requires
the organization of centers for continuous care—preferably
with a multi-disciplinary structure to provide a “holistic
approach”. The aim of the study was to assess the effectiveness
of continuous, intensive care by regular telephonic follow-up
for improving the emotional and social health of HF patients.
Fifty patients with dilated cardiomyopathy (ejection fraction
<45%) coming to HF clinic were randomized into two groups
of 25 each (control and interventional groups). A baseline
assessment of the psychosocial quality of life was done using
a modification of the Kansas City cardiomyopathy
questionnaire. Patients in the control group were treated in a
routine HF clinic on an average at a 2-monthly interval. They
were advised about fluid and diet restrictions. The
interventional group, in addition, underwent regular family
counseling, was provided a telephonic helpline and imparted
training in self-management of the disease. At the end of a 2month period, all the subjects were re-assessed on their quality
of life based on their subjective feelings, state of mind and social
functioning, using the questionnaire (max score:35). Subjects
in the intervention group were better able to cope with the
emotional and social aspects of their disease as compared to
the subjects in the control group, as evidenced by their higher
subsequent scores. (a) Interventional group: 1st visit score
23.6±1.5; 2nd visit score 28.5±2.08 (p < 0.05); (b) Control
group: 1st visit score 23.6±0.98; 2nd visit score 25.33±4.22.
The results of the study show that in a developing country
like India, addressing the psychosocial aspects in the
management of HF leads to greater improvement in quality
of life in chronic patients.
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Determinants of Functional Capacity and
Quality of Life in Patients with Chronic Heart 369
Failure
N Husain, K Ramachandran, R Maikhuri,
S Seth, D Prabhakaran, KS Reddy
Functional capacity and quality of life in heart failure (HF)
is usually independent of the left ventricular (LV) systolic
function as represented by the ejection fraction (EF). We tried
to determine the various correlates of quality of life (QoL) and
functional capacity in a cohort of patients with heart failure.
Quality of life and functional capacity (with a 6 min walk test)
was assessed in patients with heart failure; 50 patients were
assessed and then divided into two groups: Group A (reduced
quality of life) and Group B (better quality of life). Various
parameters including LV function, ventricle dimensions, renal
function, sodium, potassium, electrocardiographic (ECG)
abnormalities, and medications were assessed (mean ± SD).
Group A patients had a lower 6 min walk test (160.3±11 m)
and reduced quality of life (65±5 out of a maximum score of
123) as compared to Group B (247±9 m and QoL: 104±4).
Patients with heart failure in Group A were more likely to have
pedal edema, more likely to have impaired renal function (blood
urea: 50±4 mg/dl v. 30±2 mg/dl), were on lower doses of betablockers (carveidilol dose: 7.4±1.1 v. 16.8+2.1 mg/day), and
higher doses of spironolactone. There was no correlation of
functional capacity and quality of life with the LV function
(EF: 21±2% v. 20±1%) or with left ventricle dimensions. There
was also no correlation with the vasodilators' doses in the two
groups, sodium, potassium levels or with ECG abnormalities.
Quality of life and functional capacity is not correlated with
LV function or dimensions or with ECG abnormalities. Renal
dysfunction, pedal edema, tolerance of lower doses of betablockers and requirement of higher doses of spironolactone
are better predictors of poor functional capacity.
Extreme Altitute Cardiac Failure-Sub Acute
Mountain Sickness
370
FMH Ahmad
Army Hospital, 56 APO
The clinical profile of sub acute mountain sickness (SAMS),
a unique entity was studied at a hospital at Ladakh (3100 m),
catering to subjects at heights up to 7000 m. Fifteen cases of
SAMS formed the study population. All were males,
predominantly young, 14 (93.37%) being < 45 years. All
patients had been deployed at heights >17000 feet, 10
(66.67%) had been at height >18000 feet. All patients had
stayed at these heights for >14 days, 9 (60%) had stayed for >
90 days. Dyspnea on effort (DOE) was the commonest symptom
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seen in 13 (86.6%), followed by lassitude and swelling of feet
in 11 (73%), and cough in 10 (66.6%) patients, respectively.
Tachycardia was present in 5 (33.3%) patients, pitting pedal
edema in 9 (66.67%), raised jugular venous pressure (JVP) in
13 (86.6%) and loud P2 in 15 (100%). Hepatomegaly was
found in 12 (80%), which was tender in 6 (40%) patients.
Hb>15 gm/dl in 14 (93.37%) and leukocytosis in 4 (26.67%)
patients. Chest radiograph revealed prominent (R) descending
pulmonary artery in all patients and cardiomegaly, right
ventricular (RV) type in 5 (53.3%). All cases had deep
arrowhead T wave inversions in (R) precordial chest leads.
Evidence of associated illness was found in 7 (46.6%) cases.
All the patients responded to descent, rest, salt and fluid
restriction and small doses of diuretics within 8-12 weeks.
SAMS is a manifestation of extreme altitude presenting as
cardiac failure in normal subjects, usually after a prolonged
stay. DOE, lassitude and swelling of feet are common
presentations; loud P2, raised JVP and pedal edema are the
commonest signs. Evidence of precipitating stress and
thrombotic disorders is suggested. Electrocardiographic
changes are characterstic and aid diagnosis. Recovery without
sequelae is the rule.
Isolated Non-Compaction of Left Ventricle : 4
371
Cases with Varied Presentation
SN Routray, CK Mishra, A Mishra, B Das,
HN Mishra, M Behera
Isolated non-compaction of left ventricular (INLV) is a rare
congenital cardiomyopathy (CMP) characterized by a double
layer myocardium having a thick spongy (non-compact) inner
layer with deep trabeculation, which is at least two times
thicker than normal outer (compact) layer of the myocardium.
Heart failure is the most common presentation followed by
arrhythmia or embolic manifestation. We report 4 cases with
different modes of presentation in 1 infant and 3 adults. All
had diagnostic echoanatomic features and characteristic color
flow pattern deep into the trabeculation. A 4-month infant
presented with heart failure which improved with decongestive
treatment and inotropic support. The 2nd case was that of 46year-old diabetic male who presented with congestive heart
failure (CHF). Echocardiography revealed mild systolic
dysfunction with dominant diastolic dysfunction with
restrictive filling pattern. He continued to have class III
symptoms despite decongestive treatment. The 3rd case was
of a 30-year-old male without risk factor who sustained an
acute inferior wall ST MI elevation (STEMI) and was
thrombolyzed; on subsequent follow-up had normal coronary
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Indian Heart J 2005; 57: 512–525
angiogram and was asymptomatic. The 4th case was of a 25
year-old female with left ventricular (LV) dysfunction,
symptomatic class III/IV. He developed cerebrovascular
accident (CVA), left classical hemiplegia with right middle
cerebral artery infarct and there was partial improvement of
symptoms with decongestive treatment, inotropic support and
anticoagulants. The presentation of an adult with acute
myocardial infarction (AMI) with normal coronary arteries
and cerebral infarction, both possibly due to embolism, is
unusual and rare entity.
dyssynchrony, 9 (31.0%) had intraventricular dyssynchrony
and 4 (13.8%) patients had evidence of both. There is high
incidence of MD in patients with LV dysfunction even in
presence of normal QRS duration. Since CRT can potentially
benefit these patients, echocardiography including tissue
Doppler imaging should also be included along with ECG as a
modality for selection of patients for CRT.
Mechanical Dyssynchrony in Patients with
Left Ventricular Dysfunction with Normal
QRS Duration
Clinical and Echocardiographic
Profile of Idiopathic Dilated Cardiomyopathy 373
372
RR Kasliwal, R Raikar, N Mahajan, K Bhargava,
M Bansal
Patients with left ventricular (LV) dysfunction with
electrical dyssynchrony (ED) identified by wide QRS duration
on electrocardiogram (ECG) have been shown to benefit from
cardiac resynchronization therapy (CRT). However, it has been
realized that ED does not accurately identify those patients who
benefit from CRT. Hence, there has recently been great interest
in evaluation of CRT in other subgroups of patients as well as
those found to be having dyssynchrony by other modalities.
We therefore studied evidence of mechanical dyssnchrony
(MD) by echocardiography in patients with LV dysfunction
without ED. We studied 143 consecutive patients who had been
referred for echocardiography for various indications and had
normal QRS duration (<120 ms). All patients underwent
echocardiography including tissue Doppler imaging. MD was
considered to be present if the patient had any of the followingseptal-posterior wall delay (SPWD) > 130 ms, dyssynchrony
index > 32.6 and difference between aortic pre-ejection period
and pulmonary pre-ejection period > 40 ms. Dyssyncrony
index was calculated as the standard deviation of time-to-peak
excursion of 12 LV segments on tissue Doppler imaging from
apical views. The first two parameters indicate intraventricular
dyssynchrony and the last parameter indicates
interventricular dyssynchrony. For the purpose of comparison,
patients were divided into two groups: Group A patients with
LV dysfunction [left ventricular ejection fraction (LVEF) <
40%), n = 29 (20.1%)] and Group B patients without LV
dysfunction (LVEF >40%), n=114 (79.9%). Mean LVEF of
patients in Group A was 33.24±6.8% versus 54.82±5.6 in
Group B. Mean QRS duration were similar in the two groups
(73.10±12.3 ms v. 71.95±12.0 ms; p=0.646). Thirteen
(44.8%) patients in Group A were found to have MD as
compared to 15 (11.6%) in Group B (p <0.001). In Group A,
8 (27.6%) patients had evidence of interventricular
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523
GS Gill, Satyendra Tewari, Sudeep Kumar,
Naveen Garg, Aditya Kapoor, PK Goel, Nakul Sinha
Out of 21, 146 echocardiograms performed at our institute
in last 2 years from June 2003 to May 2005, 343 (1.69%)
patients were diagnosed to have dilated cardiomyopathy
(DCM). DCM was defined as either left ventricular (LV) and/or
right ventricular (RV) dysfunction manifested as global
hypokinesia with an overall ejection fraction (EF) of ≤50%.
Patients with regional wall motion abnormalities,
angiographically proven ischemic cardiomyopathy, valvular
heart disease were excluded. The mean age of patients was
42.6±9.1 years; 251 (73.6%) were males and 92 (26.4%) were
females. Etiologies included idiopathic in 230 (67%) patients,
alcoholics in 51 (14.5%), diabetics in 26 (7.8%), peripartum
in 23 (7%), and chemotherapy-induced in 13 (3.7%) patients.
LV dysfunction was seen in all 343 patients, while RV
dysfunction was seen in 225 (66%) patients. Grade 2 or more
mitral regurgitation was seen in 230 (67%), transradial in 157
(46%), aortic regurgitation in 61 (17.8%) and pericardial
effusion in 36 (10.4%). LV clot was found in 13 (4%) of patients
and all of them had a history of cerebrovascular accident (CVA)
(transient ischemic attack or stroke). The mean EF was 29 ±
5.2 % (range: 12-42 %). During follow-up of mean 19±7
months, 113 (32.34 %) patients were hospitalized for
treatment of heart failure. Dyspnea, orthopnea and edema
were predominant symptoms, being present in all cases.
Paroxysmal nocturnal dyspnea was present in 68 (60%), chest
pain in 13 (11.5%), palpitations in 75 (66.7%). In-hospital
mortality was 11/113 (9.2%) and in all cases due to worsening
congestive heart failure and/or ventricular arrhythmias.
Biventricular pacing was done in 9 patients, all of which
showed symptomatic improvement at a mean follow-up of
13.0±6.0 months. We conclude that idiopathic DCM is not an
uncommon diagnosis in our routine echocardiographic
examinations. Though medical treatment is often effective,
biventricular pacing can be offered as new effective treatment.
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Heart Rate and Blood Pressure Variability in
50 Cases of Heart Failure - A Chronomic
Approach
374
Adarsh Kumar, Franz Halberg, Germaine Cornelissen,
Harharpreet Kaur, Varun Mohan
Government Medical College and GND Hospital, Amritsar (India) and
Halberg Chronobiology Center, University of Minnesota, Minneapolis
MN, USA
The aim of this study was to assess the chronome (time
structure) of blood pressure (BP) and heart rate (HR) of
patients treated for heart failure (HF). BP and HR are usually
characterized by a circadian variation in MESOR (chronomeadjusted mean) - normotensive and/or hypertensive subjects.
Between January and June 2004, 25 male and 25 female
patients treated for HF automatically measured their BP and
HR round the clock for 1-3 days with TM-2430 ambulatory
monitor. Data were analyzed by sphygmochron, each patient's
profile being compared with time-specified reference data from
healthy subjects matched by gender and age. Results were
summarized by population - mean consinor. All patients were
on conventional treatment of heart failure with angiotensinconverting enzyme (ACE) inhibitors, beta-blockers and
digoxin/diuretics as and where needed. A circadian rhythm is
detected for HR (p=0.029) but not for BP. The 12- and 6-hour
components are invariably prominent (p<0.001). No
difference was found between men and women. The MESOR
of systolic BP increased with age (r=0.428, p=0.002) and the
MESOR of HR decreased with age (r=0.341, p=0.0015).
"Hypertensive" patients tended to have a higher pulse pressure
(p=0.0079). Patients with diabetes tended to have smaller
circadian double amplitudes of systolic (p=0.076) and diastolic
(p=0.089) BP. Patients with coronary artery disease had a
higher MESOR of diastolic BP (p=0.002). In conclusion, HR
and BP variability provides a very important diagnostic and
prognostic parameter in patients of HF with relation to MESOR
and presence of diabetes may also alter circadian double
amplitudes of systolic and diastolic BP.
was to determine the variability in the origin, size and
distribution of the first SA in HOCM. In this study, 25 patients
with HOCM and 25 patients who underwent coronary
angiogram for suspected coronary artery disease (CAD) but
found to have normal coronaries were evaluated. The origin
(SA) size and distribution of SA was studied. Of the 25 patients
with HOCM 16 had a large, 4 had medium-sized, 3 had small
and 2 had tiny first SA. Second SA was large in 6, mediumsized in 7, small-sized in 8 and tiny in 1. Four of them had first
SA measuring >2 mm. Ectopic origin of SA were seen in 7
patients with HOCM. Only one patient had second SA
measuring >2 mm. Only one patient had common origin of
S1 and S2. The distance from left anterior desending (LAD)
ostium to S1 ostium varied widely from 5-30 mm and that from
S1 ostium to S2 ostium 6-40 mm. One patient had SA arising
at an acute angle from LAD and we had to abandon the
procedure. Of the 25 patients without HOCM, 10 had large, 6
had medium, 9 had small and none of them had tiny first SA.
S2 was large in 10, medium-sized in 5, small in 6 and tiny in
none. S1 was >2 mm in 3 and S2 >2 mm in 1. Distance from
LAD to S1 varied from 8 mm to 36 mm that from S1-S2, 5-40
mm. No common origin of SA was seen in control group. The
characteristic milking effect of the SA was seen in 15 of HOCM
group and 3 of control group. In control group 7 of them had
valvular heart disease as underlying pathology and one had
coarctation of aorta.
Rapid Measurement of B-Type Natriuretic
Peptide in Diagnosis of Heart Failure
376
Biswarup Sarkar AK Khan, AK Satpati,
BK Chatterjee
Anatomy of the First Septal Artery in
Hypertrophic Obstructive Cardiomyopathy
Patients
375
Rajeshwari Nayak, Oomman Abraham, K Subramanyan,
P Ramachandran, I Sathyamaurthy, Robert Mao,
Mathew Samuel Kalarickel
Apollo Hospitals, Chennai
Intentional infarction of the interventricular septum by
infusing alcohol into the septal artery (SA) as treatment in
hypertrophic obstructive cardiomyopathy (HOCM) is gaining
lot of importance. Hence evaluation of SA anatomy is of
paramount importance for good procedural success. The aim
G.p65
524
B-type natriuretic peptide (BNP) is released from the cardiac
ventricle in response to increased wall tension. Now it has been
widely accepted as a marker of heart failure. We conducted a
prospective study of 210 patients who came to our institute
with acute dyspnea from September 2004 to June 2005.
Clinical, echocardiography and BNP data of all patients were
analyzed. The age range was 35 to 80 years (mean age: 60.4
years). There were 65 females and 145 males. The final
diagnosis was dyspnea due to left ventricular (LV) dysfunction
in 140 patients, and non-cardiac in 66 patients. In 4 patients
dyspnea was due to non-cardiac causes but they also had LV
dysfunction. The NYHA Class of patients was I in 10 patients,
II in 25 patients, III in 56 patients; IV in 25 patients. The range
of BNP was 5-6000 pmoles/L. BNP level by themselves were
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Indian Heart J 2005; 57: 512–525
more accurate than any historical or physical findings or
laboratory findings. Mean BNP level correlated with class of
patients class I: 30-100 pmoles/L, Class II: 100-200 pmoles/
L, class III: 200-400 pmoles/I, Class IV: 400-500 pmoles/L.
High BNP (> 100 pmoles/I) was seen predominantly in
patients with severe left ventricular (LV) dysfunction. BNP is a
useful marker in identifying heart failure. It correlates with
severity of LV dysfunction.
Stage 1 Diastolic Dysfunction: Do we Need to
Subclassify it?
377
SD Singh, Biren Singh, PC Mondal, M Panja
Regional Institute of Medical Sciences, Imphal
Apollo Gleneagles, and Institute of Post Graduate Medical Education
and Research and SSKM Hospital, Kolkata
Diastolic dysfunction is increasingly recognized as an
important cause of heart failure. However, on the other hand,
delayed relaxation abnormality of left ventricle (stage 1
diastolic dysfunction) is very commonly seen, specially in older
individuals, even in asymptomatic patients. Thus, the
correlation of stage 1 diastolic dysfunction (using Doppler
values of mitral diastolic inflow E/A ratio, pulmonary venous
flow S/D) with clinical symptoms is not always good. We did
an echocardiographic study of 100 patients (age range: 4070 years, mean 52 years; males 56, females 44) of Stage 1
diastolic dysfunction with normal systolic functions [left
ventricular ejection fraction (LVEF) > 50%] using Doppler
mitral diastolic inflow and pulmonary venous flow with and
without pre-load manipulation using Valsalva maneuver
(variable measured after 10 s of Valsalva strain). Then we
retrospectively analyzed it in relation to presence or absence
of symptoms of cardiac dysfunction (shortness of breath,
palpitation fatigue etc.) using NYHA classification. In the
subgroup of patients where there is change in A wave velocity
(10%-20% decrease with a Valsalva strain) (n=52), it was
found that all of them were asymptomatic whereas in the
subgroup with no or minimal change in A wave velocity with
Valsalva (n=48), 46 of them were symptomatic. These findings
were independent of age and sex. Thus, these variable
measurement have high sensitivity, specificity and negative
predictive value (96% each). Based on these findings, it may
be suggested that stage 1 diastolic dysfunction may be sub
classified as pre-load sensitive (Group I) and pre-load insensitive
(Group II) which may have therapeutic implication. Stage 1
Group II patients are probably the ones with high left
ventricular end-diastolic pressure (LVEDP) which may require
treatment.
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525
N-Terminal Pro-brain Natriuretic Peptide in
Patients with Heart Failure and Myocarditis
Associated with Hepatitis C Infection
378
Akira Matsumori, Toshio Shimada, Nora M Chapman,
Steven M Tracy, Jay W Mason
Kyoto University Graduate School of Medicine, and Shimane
University School of Medicine, Japan
The importance of hepatitis C virus (HCV) infection has
been recently noted in patients with cardiomyopathies and
myocarditis. We analyzed sera stored during a trial of
immunosuppressive therapy in patients with heart failure (HF)
and myocarditis. Patients without coronary artery disease
(CAD) or other specific etiology, and history of HF for ≤2 years,
were enrolled into the trial between 1986 and 1990 at 31 US,
Canadian and Japanese centers. At the time of baseline
echocardiography and exercise stress test, an endomyocardial
biopsy was performed and blood samples were stored at –80°C.
Biopsy findings were classified as “myocarditis”, “borderline
myocarditis” or “no myocarditis” based on the Dallas criteria.
Among 2,233 patients enrolled, 1,355 sera were available.
HCV antibody was measured and quantification and grouping
of HCV RNA were performed. Circulating N-terminal pro-brain
natriuretic peptide (NT-proBNP) was also measured. Anti-HCV
antibodies were identified in 59 of 1,355 (4.4%) patients,
including 6 of 102 (5.9%) patients with biopsy-proven
myocarditis, and 53 of 1,253 (4.2%) patients whose biopsy
specimens did not satisfy the Dallas criteria. Since the
prevalence of HCV infection in the general US population is
1.8% (by the Center for Disease Control prevention), HCV
infection is more prevalent in patients with HF due to
myocarditis (p < 0.01). Further, wide variations were found in
prevalence of HCV infection among the different medical
centers and regions (0-15%). Among 59 patients with HCV
antibody, HCV genomes were found in the sera of 29 (49%)
patients. Group 1 HCV was detected in 23, group 2 in 1, and
unclassifiable HCV in 5 patients. The mean concentration of
circulating HCV was 159±37 kU/ml (n=29, mean±SEM,
range 1-800 kU/ml). Circulating NT-proBNP was elevated
(>55 pg/ml) in all 42 patients (100%) with HCV antibody
(10,000±5,860 pg/ml), and mean value was significantly
greater than those without HCV antibody (n=1,276,
2,508±160 pg/ml, p<0.0001). Anti-HCV antibodies were
identifiable in sera stored for 13-17 years, and were more
prevalent in patients with myocarditis and HF than in the
general population. In regions where its prevalence is high,
HCV infection may be an important cause of HF and
myocarditis. NT-proBNP was increased more prominently in
patients with HCV infection than those without, suggesting
more severe myocardial injury in the former than in the latter.
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526 Peripheral Vascular Disease
Outpatient Ilio-Femoral Interventions
379
380
H Malhotra, S Shah, N Tanwar, K Jani,
N Vayada, M Patel, S Gupta, A Ranjan, T Patel
Ramesh Raikar, Rajneesh Kapoor, Gaurav Manocha,
Sanjeev Gera, Neeraj Gupta
The traditional approach for percutaneous interventions
of the iliac artery and arteries of lower limb is through femoral
artery. To the best of our knowledge, there are no reports in
the literature of these interventions through the radial artery.
We describe our early experience of ilio-femoral interventions
through transradial approach (TRA). We report 4 cases of iliac
and 2 cases of superficial femoral artery (SFA) interventions
performed at our centre from January 2004 to June 2005. In
all cases the left radial route was used to perform procedure.
The mean age of these patients was 57.3 ± 9.4 years, all were
men, 2 patients were diabetic, 4 were hypertensive, 1 had
dyslipidemia and 5 patients were smokers. The indications for
intervention were intermittent claudication in all patients. Left
radial artery was cannulated using 20'' Jelco cannula, 0.025''
Terumo guidewire and Terumo sheath. The hardwares used
and outcomes are summarized in the table.
Data regarding use of balloon-expanding or selfexpanding
stainless steel stents in femoropopliteal (FP) arteries is
disturbing in terms of low patency rates. Scanty data exists
regarding use of self expanding nitinol stent in FP arteries.
We present retrospective data of 64 patients (48 males, mean
age 56.1±2.8 years, 44 diabetics) who underwent
percutaneous revascularization of FP arteries with selfexpanding nitinol stents between December 2002 - December
2004 at our Institute. Follow-up duplex scan were performed
in 58/64 (90.6%) patients. Primary patency was defined as <
50% instent restenosis by duplex scan. Whenever restenosis
was picked up by duplex scan, angiography was done which
confirmed instent restenosis in more than 90% of patients. Out
of 64, 46 presented with severe claudication (Fontaine stage
II b) while rest had critical limb ischemia (Fontaine stage III or
IV). Total occlusion was found in 18 patients while rest of the
patients had high grade stenosis. Procedure was technically
successful in 100% of patients and pre-dilation was done in
54 patients. One stent was used in 38 patients, while 24
patients received 2 stents and 2 patients were put 3 stents.
Average stent length was 64.1 mm. Three patients were
followed-up for mean period of 8.1 ±1.4 months and primary
patency was observed in 39/58 (67.2%) patients. Binary
instant restenosis was found in 16/58 (27%) patients. Three
patients where duplex scan showed significant narrowing had
non-critical stenosis on angiography. It is concluded that the
use of selfexpanding nitinol stents for FP arteries appears to
be promising with better patency rates.
Iliac PTA (n= 4)
SFA PTA (n= 2)
Sheath/Guide
7 F 90 cm Shuttle
6 /7 F 125 cm Judkins
or Pinnacle sheath
right / Multipurpose
Guidewire
0.014” (BMW/ Exchanger)
Balloon length
Rapid exchange 145-150 cm long balloon
(Ultra-soft UV/Express billiary SD)
Stenting
100%
50%
Stents
Bridge assurent,
Express billiary SD
Express LD
Success
100%
100%
Major complications None
None
Minor complications 1/4
0/2
PTA: Percutaneous transluminal angioplasty
All patients were mobilized immediately and discharged on the
day of procedure on low molecular weight heparin, aspirin,
clopidogrel and cilastazol. No patient had recurrence of
claudication during a mean follow- up of 7.4 ± 6.9 months.
The availability of refined hardware (0.014'' guidewire-based
low profile balloons and balloon-expandable stents, wide
lumen guide catheters and long equipments) has played a big
role in the success of these interventions through TRA. Thus,
present equipment allows delivery of stents up to 8 mm with
the use of 6 /7 F long sheath. The left TRA is preferred as there
is no need to traverse arch of aorta and it is easier to enter the
descending aorta. To conclude, ilio-femoral interventions
through TRA are technically feasible, safe and associated with
to be a good alternative entry site for ilio-femoral interventions
with major advantage of immediate mobilization and same day
discharge.
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Results of Self-Expanding Nitinol Stents for
Femoropopliteal Artery Disease
526
Iatrogenic Iliac Artery Rupture – Emergency
Management by Longer Stent-Graft on a
Shorter Balloon
381
Vijay Trehan, S Ramakrishnan, Arima Nigam,
Bhiswa Bhushan Bharti, P Nanda Kishore,
Naresh K Goyal, Vimal Mehta, Balram Mishra,
MP Girish, Naveen Bhamri, Saibal Mukhopadhyay,
Sanjay Tyagi
Rupture of an iliac artery during percutaneous
transluminal coronary angioplasty (PTCA) is a rare but
potentially devastating complication. We report a case of
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Indian Heart J 2005; 57: 526–528
iatrogenic external iliac artery rupture that was successfully
treated by endovascular stent graft placement in an unusual
manner. Limited availability of hardware necessitated the use
of a longer bare stent graft mounted on a relatively shorter
balloon. A 45-year-old diabetic male presented with anterior
wall non-Q myocardial infarction (MI) with recurrent episodes
of rest angina. The patient was taken up for percutanous
coronary intervention (PCI) after 12 hours of eptifibatide
infusion. Coronary angiography revealed 90% discrete stenosis
of left circumflex (LCx), which was successfully stented.
Progressive hypotension and tachycardia were noted around
half-an-hour following the procedure. After initial fluid
resuscitation, the patient was immediately taken up for check
angiography which revealed normal instent coronary flow. In
view of the difficulty encountered during sheath insertion, an
iliac artery angiogram was done that revealed torrential
extravasation of contrast from a rupture site in right external
iliac artery. An angioplasty balloon catheter (6 mm × 2 cm,
Symmetry, Boston- Scientific, Meditech) was immediately
positioned at the rupture site and inflated at 2 atm to
tamponade the leak and to achieve temporary hemostasis. It
was decided to seal the leak by endovascular stent graft.
However, there was only one peripheral balloon catheter (6
mm × 20 mm, Symmetry, Boston-Scientific, Meditech)
available in our catheterization laboratory at that time and the
only peripheral stent graft available (Jostent 58 mm stent-graft,
Abbot Vascular Devices) was three times longer than the
balloon itself. The cranial end of the stent graft was handcrimped on the balloon and rest of the graft was crimped on
the catheter shaft with the help of artery forceps, keeping the
guidewire inside the lumen of the balloon catheter. Since such
stent graft - balloon assembly might slip from the balloon
during stent delivery, a 7 F Mullins sheath was first deployed
across the lesion. Then the assembled stent-graft was passed
into the Mullins sheath and positioned at the site of the rupture
within the sheath itself. Mullins sheath was gradually
withdrawn and the stent-graft was deployed. The balloon was
first inflated in the cranial part (the only mounted part of the
stent graft) at 2 atm pressure, and the deflated balloon was
withdrawn within the stent graft to be positioned in the middle
part of the stent graft and was reinflated. Subsequently, the
balloon was inflated in the caudal part of the stent graft at 6
atm pressure. A final inflation was then given at the cranial
part of the stent graft at 6 atm pressure. Further check
angiography showed smooth vessel lumen with no extra
luminal extravasation of the contrast. Patient remained
hemodynamically stable after the procedure. Repeat
angiogram after 24 hours showed normal instent flow without
any leakage of contrast. Since mounted stent grafts of varied
sizes are unlikely to be available in a catheterization laboratory
at all times, the technique described could be of use in
emergency situations.
H.p65
527
Peripheral Vascular Disease 527
Should Coronary Angiography be Routinely
Done in all Patients undergoing Peripheral
Angiography?
382
Girish S Godbole, Kiron Varghese, Annie Sheela, Sindhu,
Biju Isaac, MJ Santhosh, GG Shetty, CB Patil, SS Iyengar
St John’s Medical College Hospital, Bangalore
Although peripheral vascular disease (PVD) is common,
and shares many risk factors with coronary artery disease
(CAD), there is scanty data on the prevalence and extent of
CAD in patients with PVD. These patients often have limited
exercise capacity and hence may not manifest angina or
dyspnea and are also not candidates for a treadmill stress test.
We therefore prospectively evaluated the coronary artery
anatomy in 280 consecutive patients referred to us for a
peripheral angiogram (PAG). We also evaluated the prevalence
of risk factors and non-invasive markers of CAD. The average
age was 53.3 ± 13.5 years, and 83.2% were male. 46.8% of
the patients (131/280) had significant CAD defined as 50%
or more diameter stenosis of one or more coronary arteries.
An additional 10.1% (30/280) had mild CAD. Patients with
significant CAD were older (59.2±11.6 v. 46.2 ± 12.5 years,
p < 0.0001), had a higher incidence of diabetes (57.3% v.
13.5%, p < 0.0001), hypertension (56.5% v. 25.2%, p <
0.0001), and a history of dyslipidemia (16.8% v. 7.6%, p =
0.034) compared to patients with no CAD. There was no
significant difference in the incidence of smoking (54.2% v.
50.4%, p = 0.61, NS). CAD was more commonly associated
with lower extremity PVD (110/198, 55.6%) compared to
patients presenting with upper extremity PVD (13/62, 20.9%,
p<0.0001), and compared to other locations (8/20, 40%, p =
0.3, NS). Of 131 patients with significant CAD, 30.5% (40/
131) complained of chest pain and 37.4% (49/131) had
ischemic changes on ECG. Only 18.3% (24/131) had obvious
evidence of CAD on echocardiography. Overall, 54.2% of all
patients with significant CAD had chest pain, or ECG /
echocardiography suggestive of coronary ischemia. Our
findings suggest that although CAD is common in patients with
PVD only about half of them had evidence of CAD by history
or on routine non-invasive testing. Therefore, coronary
angiography may be indicated in all patients with PVD being
considered for peripheral angiography, and specially in older
patients with diabetes, hypertension, dyslipidemia, or
involvement of the lower extremities.
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Indian Heart J 2005; 57: 526–528
528 Peripheral Vascular Disease
Dilation and Distortion of Arch of Aorta:
“Mind Your Step” During Transradial
Procedures
383
the procedure and fluoroscopic times, the procedure can be
completed safely using TR approach.
K Jani, N Tanwar, A Ranjan, N Vayada, R Pothiwala,
SM Shah, H Malhotra, S Shah, T Patel
The radial artery has currently been regarded as a useful
vascular access site for coronary procedures. More than 96%
of our coronary procedures are performed from radial route.
We retrospectively analyzed 55 “loops” at the level of aortic
arch and ascending aorta and the peculiar procedural
problems associated with these loops. “Loops” were defined
according to the shape of catheter or guidewire in subclavian
or innominate artery, aortic arch and ascending aorta.
Following loops were noted; (i) “Sigma” loop (5 cases) (ii) “S”
loop (13 cases) (iii) “Z” loop (23 cases) and (iv)“Roller Coaster”
loop (14 cases). Loops due to arteria lusoria were excluded from
the analysis because of their peculiar problems. These loops
posed two problems (a) entry in ascending aorta, and (b)
maneuvering of catheter. The standard 0.35” guidewire tends
to slip into descending aorta. A ‘U’ curve loop to 0.35’
guidewire, Terumo wires or catheters (Simmons, Amplatz left
(AL), Patel diagnostic or Judkins) are helpful for the entry into
ascending aorta. Maneuvering of the catheter is difficult due
to poor application of torque due to multiple angulations in
the passage. AL and Amplatz right (AR) and Judkins are
preferred over the normal diagnostic catheters [Tiger (Terumo
Corporation, Japan)] at our center. The guidewire is preferably
changed to Amplatz superstiff guidewire (exchange length)
to provide adequate support for careful maneuvering.
Cannulation of left coronary ostia was done with AL or Judkins
left 3.5/4 in 27 and 14 cases, respectively. Cannulation of right
coronary ostia was done with AL/AR or JR 3.5/4 in 11 and
30 cases, respectively. The mean number of catheters
(2.6±1.1) and guidewires (2.3±0.7) required to complete
coronary procedures were higher than routine cases. Selective
cannulation of left coronary artery (LCA) was achieved in 40
out of 41 cases and 39 out of 41 cases in right coronary artery
(RCA). Non-selective cannulation was done in remaining
vessels. Left ventriculogram was performed in all cases. Mean
procedural time (25.1±5.2 min) and fluoroscopic time
(12.4±5.4 min) was higher than routine cases. For
percutaneous coronary interventions (PCI), guiding catheters
with long tip and gentle curve (no sharp angulations) that take
support of opposite wall of aorta properly cannulated coronary
ostia [Voda (Boston-Scientific, USA)] for LCA and Patel right
(Boston-Scientific, USA) for RCA. Once the coronary ostia were
cannulated properly the rest of the procedure was uneventful.
There was no increase in the rate of local vascular site
complication rate. No cross over to femoral artery was needed.
To conclude, these “loops” are infrequently encountered
during TR coronary procedures. Although they can prolong
H.p65
528
Acute Aortic Dissection : Clinical Profiles
and Outcomes
384
RR Kasliwal, Sanjeev Kumar,
ZS Meherwal, N Trehan
Acute aortic dissection is a life threatening medical
emergency associated with high rates of morbidity and
mortality. No data is available regarding clinical profiles and
outcomes of these patients and the effect of recent imaging
and therapeutic advances on patient care and outcomes in the
Indian subcontinent. Our aim was to assess the presentation,
management and outcomes of acute aortic dissection at a
single center in India. In a retrospective analysis, we studied
49 consecutive patients (mean age 52.3±12.3 years, 89%
males) of acute aortic dissection enrolled between January
2000 and May 2005. Data were collected regarding presenting
history, physical findings, managenent and mortality by review
of hospital records. A majority of the patients had Stanford
type A dissection (81.6%). Hypertension (67%) was the single
most common risk factor. Other risk factors like prior aortic
aneurysm (10.2%), bicuspid aortic valve (6%) and Marfan's
syndrome (2%) were less commonly seen. History of prior
aortic valve replacement and history of prior coronary artery
bypass surgery was found in 6% patients each. While the
sudden onset (67%) of severe pain (81.6%) was the
commonest presenting complaint, the clinical presentation
was diverse. Syncope was present in 3%. Classical findings such
as aortic regurgitation and pulse deficit were noted in only 40%
and 16.3% of patients, respectively. Initial chest radiography
and electrocardiogram (ECG) were frequently not helpful (no
abnormalities noted in 30% and 44% of patients, respectively).
Echocardiography (transthoracic and transoesopageal) was
the most frequent initial modality of choice (61%). Overall inhospital mortality was 36.7%. Mortality of patients with type
A dissection managed surgically was 10%, whereas in those
managed conservatively, mortality was as high as 60%
(p>0.001). Hypotension/shock was the most frequent inhospital complication (24.5%) and mortality in these patients
was high (66.7%). Acute aortic dissection presents with wide
range of manifestations and the classical findings are often
absent. In-hospital mortality rates can be significantly
improved if surgical management is done early. Our data
support the need for continued improvement in prevention,
diagnosis and management of acute aortic dissection.
11/24/2005, 11:12 AM
Indian Heart J 2005; 57: 529–531
Left Ventricular Mass in Hypertension with
Wall Motion Abnormality
Hypertension 529
385
Gurpal Singh, S Singh, GSP Singh
Government Medical College and GND Hospital, Amritsar
The aim of this study was to examine the left ventricular
mass (LVM) in hypertension with wall motion abnormality
(WMA). Hypertension with higher LVM represents structured
change. When LVM develops, increased LV size loses its
mechanical advantage and LV dilation increases risk of heart
failure. Fifty-four hypertensive patients (23 male, 31 females)
of either sex attending outpatient department or admitted in
our hospital were studied. Detailed history, examination,
routine investigation including electrocardiography (ECG) and
echocardiography were done. Patients with congenital
rheumatic, pulmonary, renal and pericardial diseases were
excluded. Patients were divided into two groups - Group 1 of
hypertensive without, and Group 2 with WMA. Blood pressure
(systolic, diastolic) was recorded; hypertension was said to be
present according to JNC-7 guidelines or if on antihypertensive medication. LVM was calculated in each case
using Devereurex formula. The results were analyzed and
compared in both groups. Mean age of patients in Group 1
was 53.85 years, and in Group 2, 53.15 years. Nine patients
were < 40 years; 13 (8.5%) were between 41-50 years; 12
(3.9%) 51-60 years; 15 (5.10%) 61-70 years and 5 (3.2%)
patients above 70 years of age. Presenting complaints were
dyspnea, palpitation, and edema feet. Systolic murmur were
present in all. Blood pressure (BP) was 165.9/100 mmHg and
160/90 mmHg, respectively. One patient was detected to be
diabetic, 1 had cardiovascular accident (CVA), 4 (2.2%) had
mitral valve prolapse (MVP), 2 had aortic regurgitation (AR),
4 (2.2%) had AR and mitral regurgitation (MR) both, 7 (4.3%)
MR, 2 each had aortic stenosis (AS) AR, tricuspid regurgitation
(TR), pulmonary regurgitation (PR), MR, TR, PR; 26 had E<A
in Group 1 and 13 in Group 2. LVM was 165.16 gm in Group
1 and 277.35 gm in Group 2. LVM was higher in hypertensives
with WMA as compared to hypertensives without WMA.
Echocardiography is non-invasive and more sensitive indicator
for evaluating cardiac damage in hypertension and monitor
therapy accordingly.
Brainstem Auditory-Evoked Response in
Patients with Hypertension
386
R Avasthi, MSK Subhendu, S Dwivedi, OP Tandon,
U Dhaliwal
University College of Medical Sciences and GTB Hospital, Delhi
Neurological complications in hypertension usually present
catastrophically in the absence of a marker for early damage.
This study was undertaken to measure the brianstem auditoryevoked response (BAER) in hypertensive patients and to see
the effect of control of blood pressure (BP). Patients with newly
detected essential hypertension (n=120), in the age group 3060 years, were divided into 4 groups (JNC VI) and another
I.p65
529
group of 30 controls were also enrolled. While recording
BAER, peak latencies and amplitudes of the component waves
and interpeak latencies (IPL) between I-III, III-V and I-V were
determined. The BP was controlled to achieve the target goal
of <140/90 mmHg. The patients were followed up for another
two weeks to eusure adequate BP control before a repeat BAER
recording. Our study showed an increase in the absolute
latencies of all the waves of BAER. Many latencies showed a
rising trend with the stages of hypertension, with the latencies
being always maximum in the stage 3 hypertension group. The
IPLs were prolonged in stage 3 hypertension group when
compared to the control group. The amplitude of wave I and V
was also decreased in this group. Following treatment, there
was a significant decrease in latencies of waves II and IV in
the stage 3 hypertensives. The IPLs also showed a decrease
following treatment and there was a rise in amplitude in wave
I and V. These changes were consistent in the stage 3 group. It
was noted that the number of patients with IPL and wave I
latency beyond the 95 percentile and 99 percentile of the
control group increased with the severity of hypertension.
Thus our findings suggest that hypertension does affect the
neuronal excitation/conduction in the auditory pathways.
Both the peripheral auditory pathway and the central
brainstem pathway of transmission are affected. The changes
in the neuronal conduction may not be permanent, and show
improvement with control of BP. There was a rising pattern of
abnormal BAER with the increasing severity of hypertension.
This suggests that BAER can act as potential marker of early
neurological damage and emphasizes the need for more
research in this field.
Risk stratification in Hypertension: Insights
from the Sentinel Surveillance Program in
Indian Industrial Population
387
P Jeemon, D Prabhakaran, V Chaturvedi, S Goenka,
M Singhi, KS Reddy
All India Institute of Medical Sciences, New Delhi, on behalf of the
investigators of the sentinel surveillance for CVD risk factors in Indian
industries
Hypertension usually occurs in combination with other
cardiovascular disease (CVD) risk factors. However, the amount
of risk factor clustering accompanying elevated blood pressure
(BP) is not well documented in Indian population. This study
sought to estimate the CVD risk factors clustering
accompanying elevated BP levels in Indian population. The
study subjects were employees selected by age and sex-stratified
random sampling and their family members aged 20-69 years
(n=19973 for the questionnaire survey and n=10442 for the
biochemical investigations). The chi-square test was used to
assess the difference in prevalence of CVD risk factors and
binary logistic regression to analyze the relationship of
different clusters of risk factors with hypertension. The
prevalence of pre-hypertension and hypertension (stage 1 and
11/24/2005, 11:15 AM
Indian Heart J 2005; 57: 529–531
530 Hypertension
2 together) was 56.3%, and 27.7%, respectively. Proportion
of individuals with overweight [body mass index (BMI) >23
kg/m2], central obesity (waist circumference >94 cm in males
and >88 cm in females), total cholesterol high-density
lipoprotein cholesterol (HDL-c) ratio>4.5, HDL-c <40 mg/dl
in males and <50 in females, triglycerides >150 mg/dl, and
impaired fasting glucose (plasma glucose>110 mg/dl) was
significantly higher among individuals with hypertension
compared to pre-hypertensive subjects and normotensives (all
p values <0.05). Similarly, proportion of smokers was higher
among hypertensive subjects (p<0.05). These 7 risk factors
were classified into four clusters (Cluster I: 1 or no risk factor,
Cluster II: presence of any 2 risk factors, Cluster III: presence
of any 3 risk factors, and Cluster IV: presence of > 4 risk
factors). The odds for hypertension accompanying risk factor
Cluster IV was 3 times higher (OR 3.1; 95% CI: 2.3-4.1) as
compared to Cluster I. Further, the relationship was graded.
Clustering of major CVD risk factors with hypertension is the
tenet and is true in Indian population also. A composite risk
assessment in hypertension patients is mandatory and the goal
of therapy in hypertension patients should be to improve
absolute risk profile, by controlling the accompanying risk
factors in addition to the management of hypertension.
Renal Characteristics and Effect of
Angiotensin Suppression in Oral
Contraceptive Users
388
Tanuja De, KKH Siddique, KN Siddiqui
Oral contraceptives (OCPs) increase arterial blood pressure
and the relative risk of hypertension. Clinical and renal
variables associated with the development of OCPs related to
hypertension were assessed. The study included 30 women in
whom hypertension developed while they were taking
combination estrogen, prestogen OCPs, 30 women with
essential hypertension who were not taking an OCP and 30
normotensive women, 50% of whom were taking an OCP. The
hypertensive groups were matched in terms of age, body mass
index (BMI) and blood pressure (BP) level. Before and after
acute blockade of angiotensin-converting enzyme (ACE)
inhibitor with captopril, GFR was assessed. These studies were
repeated after withdrawal of the OCP in 10 hypertensive
women. The women with OCP-induced hypertension had
higher plasma rennin activity than those with essential
hypertension. However, both groups showed similar alterations
in BP and renal function in response to captopril. The 24-hour
urinary albumin excretion was higher in women with OCPinduced hypertension than in those with essential
hypertension. Six months after OCP withdrawl, plasma renin
activity and GFR decreased along with BP. However, these
follow-up studies showed no significant change in urinary
albumin excretion or in the BP and renal hemodynamic
response to captopril. The renin-angiotensin system does not
appear to play any role in the maintenance of OCP-induced
I.p65
530
hypertension. Use of OCPs may also lead to increased albumin
excretion, perhaps as a result of endothelial dysfunction. In
conclusion, markers of susceptibility to OCP-induced
hypertension must be assessed along with the possible
predictive value of excessive albumin excretion.
A Profile of Clinical, Electrocardiographic
and Echocardiographic Studies of Left
Ventricular Hypertrophy in Hypertension
Patients
389
B Mitra, SD Singh, S Basu, D Kumar, S Mondal, Ka Sema,
YI Singh, R Ningthem, MK Singh, B Majumder
Suraksha Hospital and Institute of Post Graduate Medical
Education and Research, Kolkata, and Regional Institute of
Medical Sciences, Imphal
An elevated arterial pressure is the most important
modifiable cardiovascular risk factor. We studied the
relationships of the clinical (by physical examination),
radiological (chest X-ray), electrocardiographic (ECG) by
voltage criteria of Sokolow and Lyon) and echocardiographic
finding [M-mode and diastolic wall of left ventricular
hypertrophy (LVH) thickness of >11 mm] in 50 patients of
hypertension [blood pressure (BP) > 140/90 mmHg, ≥2
occasions or on anti-hypertensive]. Mean age was
54.48±13.45 years (range: 16-70 years) and 72% were males.
Mean systolic and diastolic BP were 167±18.21 and
98.4±12.99 mmHg. Complaints included headache (38%),
palpitation (34%), fatigue (34%), giddiness (32%), exertional
dyspnea (24%), chest pain (24%), right-sided weakness (24%),
left-sided weakness (14%), orthopnea (12%), syncope (8%),
polyuria (8%), epistaxis (2%) and flank pain (2%). On physical
examination, using displaced apical impulse as a sign of LVH,
it was seen in 23 patients (sensitivity: 46.66%); using chest Xray, it was seen in 30 (sensitive 62.22%) patients. On ECG
examination, LVH was seen in 16 (32% sensitivity) patients.
LVH
Sensitivity Specificity%
PPV (%)
NPV (%)
Accuracy (%)
Clinical
Chest X-ray
ECG
46.66%
62.22%
32.33%
91.30
93.33
93.75
11.11
15.00
11.76
48.00
62.00
38.00
60.00
60.00
80.00
By echocardiography, concentric LVH was diagnosed in 45
(90%) patients, with only 5 (10%) patients showing normal
wall thickness. Echocardiography remained the most cost
effective, non-invasive tool for evaluation of LV wall thickness.
Prevalence of Diastolic Dysfunction
in Healthy Hypertensive Female
390
A Jain, A Puri, K Behal, S Kumar Dwivedi, VS Narain,
RK Saran, VK Puri
Diastolic function plays an important role in cardiac
mortality and morbidity. Incidence of hospitalization for heart
11/24/2005, 11:15 AM
Indian Heart J 2005; 57: 529–531
Hypertension 531
failure with preserved systolic function is higher in females,
elderly patients with history of hypertension (HTN) compared
to males. There is also a strong inverse correlation between
plasma brain natriuretic peptide (BNP) levels, diastolic
dysfunction and survival. The present study was undertaken
to assess the prevalence of diastolic dysfunction in healthy
hypertensive females compared to males, and to ascertain the
N-terminal probrain natriuretic peptide (NT-proBNP) levels in
these patients. A total 100 patients (males 52, females 48),
above the age of 50 years with HTN were recruited. Patients
did not have any evidence of coronary artery disease (CAD) or
heart failure. Left ventricular (LV) wall thickness, peak early
(E), atrial (A) diastolic filling velocities and deceleration time
(DT) were measured by 2D echocardiography and spectral
Doppler. NT-proBNP levels were measured in all the patients.
Diastolic dysfunction was defined as E/A ratio <1 and /or DT
<120 or >220 ms. Diastolic dysfunction was present in 70%
of the patients. Mean age, systolic blood pressure and diastolic
blood pressure was same in both males, and females.
Prevalence of diastolic dysfunction was higher in females than
in males (78% v. 61%, p<0.05). After adjustment for age, body
mass index (BMI) and left ventricular (LV) wall thickness,
diastolic dysfunction was significantly more in females. NTproBNP levels were also higher in females compared to males
(p<0.05). Echocardiograhic evidence of diastolic dysfunction
was found in 70% of healthy hypertensive patients. Females
had significantly more echocardiographic evidence of diastolic
dysfunction and increased levels of NT- proBNP than males.
Family-Oriented Treatment of Hypertension
FRB Geronimo, RF Abarquez, FE Punzalan, EI Cabral
391
UP-Philippine General Hospital, Manila
This study sought to determine how many household
members of hypertensive patients can be motivated to consult
for cardiovascular screening and to determine the compliance
to follow-up of patients and household members. We also
aimed to find out the prevalence of hypertension, co-morbid
risk factors, and metabolic syndrome in both groups. This was
a cross-sectional pilot study of 100 consecutive adult
hypertensive patients (index patients) and their household
members seen in our outpatients clinics in UP-Philippine
Hospital. They were screened for hypertension, diabetes,
dyslipidemia, obesity, smoking, sedentarism, and metabolic
syndrome. First, follow-ups were monitored. Among index
patients, 71% brought household members and 58% had
follow-ups. Only 36% of household members responded for
screening and 40% of respondents had follow-ups. Mean
duration of follow-up was 29 days. Work prevented a majority
to attend screening and follow-ups. They shared similar
anthropometric and biochemical profile except that index
patients had older age, lower high-density lipoprotein (HDL)
levels, and higher low-density lipoprotein (LDL) levels. They
I.p65
531
shared similar risk factors. The greatest percentage increase
in detection rate was found in sedentarism, dyslipidemia, and
obesity. In both groups, dyslipidemia was most prevalent
followed by sedentarism, obesity, diabetes, and smoking.
Reduced HDL levels was the most common form of
dyslipidemia. Diabetes and metabolic syndrome were more
common among index patients. Metabolic syndrome occurred
in 57% of index patients and 29% of household members.
Hypertensive patients can bring household members for
screening and follow-ups and compliance can be improved.
Risk factors are prevalent in the household members of the
patients. Hypertension and risk factor management should be
a family affair and "family affair" approach can improve
detection rate of risk factors. Dyslipidemia and reduced HDL
levels may contribute to development of cardiovascular disease
among Filipino patients. Metabolic syndrome has a high
prevalence among hypertensive patients. A prospective study
should investigate whether "family affair" approach can
improve blood pressure control in the private clinics and
industrial setting.
Echo-Doppler Evaluation of Hypertensive
Disorders of Pregnancy
392
DK Desai, DP Naidoo, J Moodley, C Chetty
Nelson R Mandela School of Medicine, University of KwaZulu-Natal,
Durban, Saudi Africa
Echo-doppler was used to assess maternal hemodynamics
and uterine artery Doppler velocimetry in 40 untreated
pregnant hypertensives in an attempt to define high risk
pregnancies. Fetal outcome was assessed as adverse or nonadverse, by birth weight, time of delivery and fetal
complications.
Preeclamp
Gestation
Cardiac inde
Systolic BP
Diastolic BP
Birth weight
LV Septum
LV mass/m2
LVES stress
SVRI
UARI
31
3.51
166
96
169
1.2
110
98
2796
0.67
Gestat. Pre + Chronic Chronic
hypert
hypert
hyp
37
3.75
134
82
3.02
1.1
99
77
2132
0.48
29
3.82
179
104
1.56
1.5
141
105
2837
0.67
29
3.79
154
101
2.77
1.3
119
90
2472
0.58
p-value
0.024*
0.727
0.001*
0.014*
0.004*
0.009*
0.006*
0.100
0.079
0.002*
There was no difference in cardiac index between groups. Fetal
birth weight correlated poorly with cardiac index in preeclamptic women (r = 0.21). A better correlation was seen with
uterine artery resistance index (UARI) (r = -0.65) and systemic
vascular resistance index (SVRI) (r = -0.49). In conclusion,
higher risk patients were better selected by uterine artery
resistance index (and proteinuria) than maternal
hemodynamics.
11/24/2005, 11:15 AM
Indian Heart J 2005; 57: 532–542
532 Echocardiography
Usefulness of Tissue Doppler Imaging in
Evaluation of Right Ventricular Myocardial
Infarction and Proximal Right Coronary
Artery Lesion in Inferior Wall Myocardial
Infarction
393
SS Khaja Rafeeq, V Jaganathan, R Alagesan,
M Annamalai, S Shunmugasundaram, Geetha
Subramanian, A Balaguru, G Anuradha, G Palanisamy,
RS Ravishankar, C Balaubramanian, AS Arul
The diagnosis of right ventricular myocardial infarction
(RVMI) accompanied by acute inferior myocardial infarction
(MI) is still a problem. This study was designed to find out the
usefulness of both peak myocardial systolic velocity (Sm) and
of the myocardial performance index (MPI) of the right
ventricle measured by pulsed-wave tissue Doppler imaging
(TDI) in assessing right ventricular function. Twenty patients
who experienced a first acute inferior MI were prospectively
assessed. Their clinical data, Killip class and 15-lead
electrocardiogram (ECG) including right-sided leads were
collected. From the echocardiographic apical four-chamber
view, the Sm, the peak early diastolic velocity, peak late diastolic
velocity, the ejection time, the isovolumetric relaxation time,
and the contraction time of the right ventricle were recorded
at the level of the tricuspid annulus by using TDI. Then, the
MPI was calculated from the formula: isovolumic contraction
time (IVCT) + isovolumic relaxation time (IVRT)/ET. All
patients underwent coronary angiogram before discharge. The
patients were classified into the three groups, according to the
localization of the infarct-related artery (IRA). Group I proximal right coronary artery (RCA) disease; Group II - distal
RCA disease; and Group III - circumflex coronary artery
involvement. RVMI was detected in 10 patients, and the infarctrelated artery (IRA) in these patients was the proximal RCA.
The right ventricular Sm was observed to be significantly low
(< 12 cm/s) in patients with RVMIs and those in Group I
compared to those without RVMIs and those in groups II and
III. The MPI was higher in patients with RVMI (0.80 ± 0.10
v.25± 0.11) than in those patients without RVMI. Out of 10
patients, 6 showed electrocardiographic evidence of RVMI. To
conclude, Sm <12 cm/s and MPI > 0.70 obtained by TDI may
define RVMI concomitant with acute inferior MI. Our study
also shows the superiority of TDI over surface ECG in
diagnosing RVMI.
Mitral L Wave in Patients with Hypertrophic
Cardiomyopathy: A Marker of Advanced
Diastolic Dysfunction
394
Vimal Mehta, Manish Sharma, Ajay Raj,
Bishwa Bhushan Bharti, Saibal Mukhopadhyay,
Jamal Yusuf, Naresh K Goyal, S Ramakrishnan,
Ashutosh Sahu, Asit Khanna, Praveen Singh,
Vijay Trehan, Sanjay Tyagi
The significance of the prominent mid-diastolic filling wave,
termed as an L wave, has not been studied in patients with
hypertrophic cardiomyopathy (HCM). The aim of this study
was to determine the clinical implications of L wave in patients
with HCM using tissue Doppler imaging. Complete 2D
echocardiography and Doppler examination (Vingmed GE
System Five) was performed in 51 HCM patients (mean age:
33±12 years, males 36). When mitral inflow is triphasic,
including mid-diastolic flow velocity of at least 0.2 m/s. it is
termed as mitral L wave. Peak velocity of E, L, and A, and
deceleration time were measured from pulsed Doppler of mitral
inflow. Early diastolic mitral annular velocities (E') were
measured by tissue velocity imaging from the lateral mitral
annular corner. Based on the presence and absence of L wave,
the mitral inflow pattern was divided into two groups, Group I
(L wave present, n=14), and Group II (L wave absent, n=37).
The heart rate was significantly lower in Group I (54±5 v.
68±6, p<0.01). Group I patients had significantly higher E/A
(1.6±0.3 v. 1.1±0.3, p<0.001), higher E/E' (14±3 v. 10±4,
p<0.001), and higher left atrial volume index (40±8 v. 31±4
ml/m2, p<0.01) and shorter deceleration time (184 ±23 v.
263±43 ms, p<0.001). We conclude that the presence of L
wave in HCM is associated with higher E/A, higher E/E', shorter
deceleration time and enlarged left atrium, indicating
advanced diastolic dysfunction with elevated filling pressure.
Thus the presence of L wave in patient with HCM identifies a
subgroup with advanced diastolic dysfunction.
Serial Changes in Left Ventricular Diastolic
Indexes Derived from Doppler
Echocardiography after Primary
Percutaneous Coronary Intervention for
Anterior Wall Myocardial Infarction
395
Debika Chatterjee, Debabrata Roy, Sunip Banerjee,
BP Chatterjee, B Dev
Rabindranath Tagore International, Institute of Cardiac Sciences,
Kolkata
Patients with acute anterior wall myocardial infarction (MI)
either show restrictive ventricular filling pattern indicative of
initial myocardial stiffness or complications or prolonged
deceleration time (DT) indicative of favorable remodeling or
healing of complication. The aim of the present study was to
assess whether primary percutaneous coronary intervention
J.p65
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11/24/2005, 11:16 AM
Indian Heart J 2005; 57: 532–542
Echocardiography 533
(PCI) for anterior wall MI was associated with favorable
diastolic function. A total of 36 patients (male-female
ratio=35:1) who underwent primary PCI over last one year
were compared with 60 age-, sex- and infarct area-matched
patients who underwent thrombolysis. Doppler
echocardiography was done in all the cases 48 hours after
primary PCI or thrombolysis. There was no significant
difference in baseline characteristics between the two groups.
The results are presented in the table.
Primary PCI
Thrombolysis
n
Restrictive filling
Prolonged DT
36
60
4
25*
32
35*
* p<0.01
Thus, primary PCI for MI conferred a better diastolic function.
Real-Time 3D Transthoracic
396
Echocardiographic Assessment of Mitral
Valve Area: A Comparative Study with
Conventional 2D Echocardiographic Methods
Nagendra S Chouhan, Vivek Kumar, Ravi R Kasliwal,
Simmi Manocha, Govind Goyal, Naresh Trehan
The conventional two-dimensional transthoracic
echocardiography (2DTTE) and Doppler assessment of mitral
valve orifice area (MVA) are the acceptable methods for
assessement of mitral stenosis. However, they are highly
dependent on hemodynamic variable and cutting plane on
2DTTE. Real time Three-dimensional transthoracic
echocardiography (RT 3DTTE) can visualize the overall
structure of the mitral valve apparatus 'enface', thuse
rendering an accurate measurement of area and better
assessment of mitral valve apparatus. We studied 32
consecutive patients (12 females, mean age 36.45±8.88 years)
of isolated mitral stenosis of rheumatic etiology. Conventional
2DTTE short-axis view with shortest MVA was acquired for
planimetery assessment, while RT 3DTTE image envelope
covering whole mitral valve apparatus was acquired from any
available window without localizing for smallest MVA. On these
3D images, three modifiable cutting planes were aligned to the
axis of valve opening plane to get short axis image in the plane
of shortest valve area enface. RT 3DTTE measurements were
recorded by two independent echocardiographers and then
repeated by one of them. Results were compared. In our study
3DTTE-derived planimetry MVA had a good correlation with
conventional 2DTTE method [3DTTE planimetry MVA and
2DTTE planimetery MVA, r=0.985; 3DTTE MVA and 2DTTE
pressure half time (PHT) MVA, r=0.965, p value (two-tailed)
≤0.0001)].
J.p65
533
Measurement
Mean
Diff.
(mm)
r
SEE
Equation
p value
2D PHT MVA v.
3D planimetery MVA
0.129
0.965 0.051 y=0.874
x+0.041
<0.0001
2D planimetery MVA v.
3D planimetery MVA
0.069
0.985 0.035 y=0.924
x+0.029
<0.0001
2D minimum MVA v.
3D planimetery MVA
0.02
0.987 0.033 y=0.937
x+0.059
<0.0001
PHT: pressure half time, MVA: mitral valve area
3DTTE also provides additional information about surface
anatomy of leaflets and the subvalvular apparatus with clear
demarcation of commissural fusion and scallops of leaflets in
real time. Inter observer and intra observer variability was good
for 3DTTE (r=0.93 and 0.96, p< 0.03 for MVA). RT 3DTTE
can efficiently and accurately assess MVA with more
comprehensive assessment of anatomical details, and is not
operator-dependent.
Tissue Doppler-Derived Post-Systolic Motion:
A Sensitive and Specific Non-Invasive Marker 397
for Diagnosing Left Anterior Descending
Disease in the Presence of Left Bundle
Branch Block
S Shunmugasundaram, Geetha Subramanian, A Balaguru,
G Anuradha, G Gnanavelu, S Venkatesan,
PS Mohanamurugan, K Meenakshi
Non-invasive diagnosis of left anterior descending artery
(LAD) stenosis in patients with left bundle branch block (LBBB)
is particularly difficult because of the well known ECG
limitations, echocardiographic abnormal septal wall motion
and possible myocardial scintigraphic anteroseptal perfusion
defect artifacts. Recent reports show that tissue Dopplerderived post-systolic motion, an asynchronous contraction
occurring during an isovolumetric relaxation period is a
sensitive and specific marker for LAD occlusion. The aim of
this study was to analyze the incidence and characteristics of
post-systolic motion (PSM in LBBB) with or without stenosis
of the LAD. Twenty-eight patients with chest pain without
prior myocardial infarction (MI) and complete LBBB were
included for the study. Standard Doppler echocardiography and
tissue Doppler of both the middle posterior septum and lateral
mitral annulus were performed in the apical 4-chamber view.
Tissue Doppler-derived septal PSM was measured and all
patients underwent coronary angiography within 1 month.
Angiographically the study population were divided into two
groups; 13 without LAD stenosis and 15 with LAD stenosis (>
50%). The clinical, ECG and standard Doppler diastolic indices
were comparable between the two groups. Septal tissue Doppler
showed lower myocardial systolic (Sm) and atrial peak
velocities (both p < 0.05), a higher PSM (> 2 cm/s; p < 0.005),
11/24/2005, 11:16 AM
Indian Heart J 2005; 57: 532–542
in patients with LAD stenosis. A Sm/PSM ratio <1 was detected
in 93.3% of patients (14/15) with LAD stenosis (sensitivity
93.3%, specificity 100%); 23% (3/13) patients without LAD
stenosis also had PSM but with a Sm/PSM ratio >1. To
conclude, tissue Doppler-derived higher PSM is a simple, noninvasive marker with high sensitivity and specificity to
diagnose LAD disease in the presence of LBBB.
We observed from our study that all patients with IWMI had
significant degree of RV dysfunction as assessed by TDI analysis
of tricuspid annular motion velocity. This was still more
significant in patients with associated RVMI.
Myocardial Performance Index in Acute ST
Elevation Myocardial Infarction
Right Ventricular Function in Inferior
Myocardial Infarction by Tissue Doppler
Imaging
398
The purpose of this study was to analyze the right
ventricular function in patients with acute inferior wall
myocardial infarction (IWMI) by tissue Doppler imaging (TDI)
of tricuspid annulus. Thirty patients with first acute IWMI
were prospectively compared with as many patients with first
acute anterior wall myocardial infarction (AWMI) and as many
age matched controls. Right ventricular (RV) infarction in
IWMI was diagnosed by standard criteria. From the
echocardiographic apical 4- chamber view, the systolic motion
of the tricuspid annulus was recorded at the RV free wall. Peak
systolic and peak early and late diastolic velocities of the
tricuspid annulus at the RV free wall also were recorded with
the use of pulsed-wave Doppler tissue imaging. The tricuspid
annular motion was reduced in IWMI compared with that in
healthy individuals (20.5 mm and 25 mm, respectively,
p<0.001). The peak systolic velocity of the tricuspid annulus
was significantly reduced in IWMI compared with healthy
individuals (12 cm/s v. 14.5 cm /s, p<0.001) and patients with
AWMI (12 cm/s v. 14.5 cm/s, p<0.001). Patients with IWMI
were divided into 2 subgroups: those with and those without
ECG signs of RVMI. The tricuspid annular motion was
significantly lower in patients with RVMI than in patients
without RV infarction. In addition, compared with patients
without signs of RVMI, patients with RV infarction also had a
significantly decreased peak systolic tricuspid annular velocity
(13.3 cm/s and 10.3 cm/s, p<0.001) and peak early diastolic
velocity (13 cm/s and 8.2 cm/s, p<0.001).
Tricuspid annular
motion (mm)
20.5
Peak systolic velocity
of tricuspid annulus
(cm/s)
12
Group B
Group C
IWMI with AWMI
RVMI (n=9) (n=30)
Controls
(n=30)
p value
A v. C
18.5
25
25
0.001
10.3
14.5
14.5
0.001
IWMI: inferior wall myocardial infarction; RVMI: right ventricular myocardial
infarction; AWMI: anterior wall myocardial infarction
J.p65
534
Sajan Narayanan, A Ajith, Subair, KR Santhosh,
PN Gupta, A George Koshy, S Sharma, K Suresh,
S Tennyson
T Munusamy, V Jaganathan, R Alagesan, M Annamalai,
A Balaguru, C Moorthy, Justin Paul G,
PS Mohanamurugan, K Meenakshi
Group A
IWMI
(n=21)
399
Left ventricular (LV) ejection fraction is being used as a
measure of LV function and provides prognostic value in acute
ST elevation myocardial infarction (STEMI). Ejection fraction
is a load-dependent variable which interferes with its
assessment. Myocardial performance index has been proposed
to be a load independent variable. The prognostic value of
myocardial performance index in STEMI is not clear. To
determine whether myocardial performance index correlates
with other indices of LV function and to estimate its prognostic
value, 40 consecutive patients with acute STEMI within 48
hours of onset of chest pain were included in this study. A
detailed echocardiographic (Echo) evaluation, with regard to
LV ejection fraction, LV end-systolic volume, Doppler-derived
right ventricular (RV) and LV myocardial performance indices
were determined. Patients were grouped into different tertiles
according to their myocardial performance indices, and
followed up for 7 days or until hospital discharge. The end
points were death, recurrent ischemia, need for urgent target
vessel revascularization (TVR) or a composite of death,
recurrent ischemia and need for urgent TVR. The mean age
was 54.05±9.27 years; 8/40 (20%) patients were females; 38/
40 (95%) patients received intravenous (IV) streptokinase
within a mean window period of 4±2.2 hours. 17/40 (42.5%)
patients had anterior wall myocardial infarction (AWMI). End
points were reached in 23/40 (57.5%) patients. RV myocardial
performance index value of ≥ 0.5 was significantly predictive
of the in-hospital occurrence of recurrent ischemia [5% (2/
40) v. 17.5% (7/40), p≤0.0001] and need for urgent TVR [5%
(2/40) v. 17.5% (7/40), p≤0.0001]. The value of ≤ 0.5 was
not found to correlate with increased mortality [0% (0/40) v.
10% (4/40), p=NS)] although all the deaths occurred in the ≥
0.5 tertile. The value was not useful to predict reduced LV
ejection fraction [≤ 45%, 0% (0/40) v. 10% (4/40), p=NS)] or
elevated LV end-systolic volume [≥ 40 ml, 10% (4/40) v. 30%
(12/40), p=NS]. LV myocardial performance index value of ≥
0.5 was not found to be useful to predict death [0% (0/40 ) v.
10% (4/40, p=NS], recurrent ischemia [7.5% (3/40) v. 15%
(6/40), p=NS] or need for urgent TVR [7.5% (3/40) v. 15%
(6/40), p=NS]. The value also did not correlate with reduced
LV ejection fraction [2.5% (1/40) v. 7.5% (3/40), p=NS] or
11/24/2005, 11:16 AM
Indian Heart J 2005; 57: 532–542
elevated end-systolic volume [22.5% (9/40) v. 17.5% (7/40)
p=NS]. Early performance of Doppler-derived RV myocardial
performance index is useful in risk stratification of patients
with acute STEMI. A higher value of this index is associated
with adverse in-hospital outcomes.
Transesophageal Echocardiographic Study
in Ischemic Stroke
To conclude, TEE evaluation should be an integral part in
diagnostic work-up of patients with cryptogenic stroke.
Further, atrial septal aneurysm, positive bubble study and
descending aorta plaques were noticed in significant
percentage of patients.
400
G Prathap Kumar, V Amuthan, S Palanichamy,
S Murugan, RA Janarthanan, S Balasubramanian,
Mohamed S Naina, S Balashankar, P Kannan,
G Jeyakumar, M Anandan
The aim of the study was to find out cardiac source for
ischemic stroke. During the period, March 2005 to June 2005,
126 patients with computerized tomography (CT) -proved
ischemic stroke were studied. Transthoracic echocardiography
(TTE) and transesophageal echocardiography (TEE) were done
using ALOKA SSP PRO 2000 machine with multiplane TEE
capabilities. Bubble study was done in all patients. Carotids and
descending aorta were also imaged for the presence of plaques.
There were 62 male patients and the age group under study
was between 14 and 80 years. All stroke patients were divided
into 'rheumatic heart disease (RHD)', 'cryptogenic' and other
causes group; 12 patients had hypertension alone, 10 patients
had diabetes alone and 36 patients had both diabetes and
hypertension; 24 patients had RHD. Abnormal ECG was
present in 66 patients. Atrial fibrillation was seen in 10
patients. The mean left atrial appentage (LAA) mass in patients
with left ventricular hypertrophy (LVH) was 198±22 gm.
Abnormal TEE was present in 62 patients, 24 patients had
severe mitral stenosis (MS), 4 patients had anterior wall
myocardial infarction (AWMI) and 2 patients had hypertrophic
obstructive cardiomyopathy (HOCM). In the cryptogenic stroke
group, atrial septal aneurysm (ASA) was present in 8 patients
and bubble study was positive in 4 patients; 16 patients had
LAA clot, 2 (9.1%) in cryptogenic group, 2 (3.3%) in other
causes group and 12 (50%) in RHD group. Descending aorta
plaque was seen in 6 patients in cryptogenic group.
Stroke
LAA
size
Cryptogenic 2.5 ±
(n=22)
0.33*
RHD
3.61±
(n=24)
0.31
LAA
velocity
0.69±0.16
Thrombus Plaque
ASA
Bubble
2 (9.1%)
8
(36.3%)
-
4
(9.1%)
-
6
(27.3%)
-
Clot**
12 (50%)
0.29± 0.02
No clot**
0.49±0.06
Other cause 2.57± 0.61±0.14 2(3.3%)
(n=60)
0.57
Total
2.77± 0.57±0.19 16
6
(n=106)
0.63
(15.1%)
(5.6%)
p = 0.0001, ** p = 0.00003
LAA: left atrial appendage; ASA: atrial septal aneurysm
J.p65
535
-
-
8
(7.5%)
4
(3.8%)*
Right Ventricular Tei Index :
Echocardiographic Marker for Right
Coronary Artery Stenosis and Improvement
with Angioplasty
401
CK Mishra, SN Routray, A Mishra, G Jena,
HN Mishra, M Behera
Sixteen patients without history of infarction underwent
percutaneus transluminal coronary angioplasty (PTCA) and
stenting of right coronary artery (RCA) in our institute. The
right ventricular (RV) Tei index was studied before PCTA, (preTei), after PTCA (post-Tei) and at 6 months follow-up. Ten
patients with normal coronaries and without ventricular
systolic or diastolic dysfunction served as control. RV Tei index
was calculated as: "a-b divided by b." [a = time between the
end of one tricuspid valve (TV) flow and onset of the next, b =
pulmonary flow ejection time). Severity of lesion was assessed
by diameter stenosis (% stenosis). Pre-and post-PTCA Tei index
was correlated with diameter stenosis.
Control
Age (in years) 52.6±7.1
% Stenosis
Nil
Tei index
31.2±6.2
Pre-Tei
54.2±6.6
82.2±12.7
51.4±12.8*
Post-Tei
7.4±12.4
34.3±11.6*
* p< 0.05 between pre-PTCA and control as well as pre- and post-PTCA
Thus, a Tei index > 40 could predict the presence of RCA
stenosis (sensitivity 80% and specificity 73%). The Tei index is
increased in patients with RCA lesion, is significantly related
to the severity of the lesion and improves with PTCA and
stenting, the improvement being maintained on follow-up (RV
Tei index 38.7±9.7). It can predict the presence of RV ischemia
with some accuracy.
11/24/2005, 11:16 AM
Indian Heart J 2005; 57: 532–542
Transesophageal Echocardiographic
Evaluation of Patients with Atrial Fibrillation 402
Correlation of Diastolic Dysfunction with
Left Atrial Volume
S Balashankar, V Amuthan, S Palanichamy, S Murugan,
RA Janarthanan, S Balasubramanian, Mohamed S Naina,
G Prathapkumar, P Kannan, G Jeyakumar, M Anandan
PC Koregol, G Rajyadhyaksha, B Sreenivasa,
AU Mahajan
The aim of the study was the evaluation of the patients with
atrial fibrillation using transesophageal echocardiography
(TEE). We studied 152 patients of atrial fibrillation admitted
during the period, August 2004 to June 2005. All patients
underwent transthoracic echocardiography (TTE) and TEE
evaluation using ALOKA SSP PRO 2000 with multiplane TEE
probe. TEE evaluation was done in all patients, to record left
atrial appendage (LAA) velocity and to look for the presence
of spontaneous echo contrast, left atrial thrombus and LAA
size measurement. Out of 152 patients, 66 (43%) were males.
Mean age of study population was 36±10 years; 136 (90%)
patients had rheumatic heart disease (RHD), 10 patients had
hypertension, 4 patients had thyrotoxicosis, 2 patients each
had congenital heart disease [atrial septal defect (ASD)], dilated
cardiomyopathy (DCM), hypertrophic obstructive
cardiomyopathy (HOCM), and coronary artery disease (CAD).
TTE examination revealed LA clot in 42 (27%) patients and
spontaneous echo contrast was seen in 32 (21%) patients. TTE
did not reveal the presence of clot. However, TEE examination
revealed LAA spontaneous echo contrast in 112 (73%)
patients. LAA thrombus was seen in 78 (51%) patients. Only
10 of the patients with thrombus had cardiovascular accident
(CVA). The mean LAA flow velocity in patients with left atrial
thrombus was 0.17±0.05 m/s and in patients without left
atrial thrombus it was 0.36±0.08 m/s. The mean thrombus
size in patients with CVA was 2.54±1.02 cm and in those
without CVA was 1.22 ±0.31 cm (p<0.05).
RHD
n= 136 (90%)
Non-RHD,
n=16 (10%)
Thrombus
No
Thrombus
No
thrombus
thrombus
74 (55%)
62 (45%)
4 (25%)
12 (75%)
Age (years) 34±7
34±10
50±4
40±8
Male
38 (51)
20 (32)
2(50)
6 (50)
Female
36 (49)
42 (68)
2(50)
6 (50)
LA size
4.7±0.3
4.2±0.9
4.5±2.1
4±0.4
(cm)
p=0.005
p=0.641
LAA size
3.8±1
2.7±1
3±0.07
2.7±0.8
(cm)
p=0.003
p=0.72
LAA
0.17± 0.05 0.36±0.08 0.27±0.17
0.35±0.3
velocity
p=0.001
p=0.147
RHD: rheumatic heart disease; LA: left atrial; LAA: left atrial appendage
Values in parentheses show percentage
We conclude that atrial fibrillation is one of the commonest
arrhythmia in clinical practice; 55% of RHD patients and 25%
of patients in non-RHD group had LAA thrombus and
anticoagulation therapy was must for these patients.
J.p65
536
403
Mumbai
We examined the relationship between left atrial volume
(LAVi) indexed to body surface area and clinical and Doppler
echocardiography parameter in patients, with one of the
following diagnosis: hypertension, congestive heart failure,
coronary artery disease (CAD) and diabetes mellitus (DM).
Patients with valvular disease were excluded. All patients were
more than 40 years of age. The diastolic function was graded
as normal, Grade I to III diastolic dysfunction. Twenty-four
percent patients had no diastolic dysfunction, 64% had Grade
I diastolic dysfunction, 9% Grade II diastolic dysfunction and
3% had Grade III diastolic dysfunction. The LAVi increased with
worsening of diastolic dysfunction: 21±7 ml/m2 (normal),
25±6 ml/m2 (grade I diastolic dysfunction) 34±8, ml/m2
(Grade II diastolic dysfunction), and 46±12 ml/m2 (Grade III
diastolic dysfunction). The predictive value of LAVi for
detection of diastolic dysfunction is moderate to high. In this
study there was 69% sensitivity and 77% specificity for any
grade of diastolic dysfunction. It further increases to 88% with
severe diastolic dysfunction. Our data suggest that LAVi is
correlated with diastolic dysfunction and has moderate
sensitivity and specificity.
Assessment of Right Ventricular Function by
404
Tissue Doppler Imaging and its Comparison
with Radionuclide Scan
K Jai Shankar, KM Lakshmipathy, Snehal Kulkarni,
R Prem Sekar, Pramod Jaiswal, Pradeep Nayar,
Joy M Thomas, Madhu N Sankar, KM Cherian
Chennai
Assessment of right ventricular function is difficult by
conventional 2D echocardiography owing to the complex
structure and asymmetrical shape of the ventricle. Tissue
Doppler imaging (TDl) is a technique of analysis of myocardial
wall motion. It may be used for right ventricular (RV) walls
from the apical 4-chamber view, from which velocities can be
measured from tricuspid annulus to the apex. In this ongoing
study we assessed the post-operative right ventricular function
in 8 patients [tetralogy of Fallot (TOF): 4, mitral valve disease
with pulmonary artery hypertension (PAH): 2, coronary
artery bypass grafting (CABG): 2] by TDI and compared it with
First pass radionuclide scan. The echocardiography done preoperatively, on day 7 and at 3 months follow-up. Radionuclide
11/24/2005, 11:16 AM
Indian Heart J 2005; 57: 532–542
scan was done at 3 months after injection of intravenous (IV)
bolus of 20 mCi technetium 99m. The pulse Doppler indices
of tricuspid annular motion i.e D wave integral (DWI), peak
velocity of D wave (PVDW), which gave an estimate of tricuspid
plane systolic excursion, were assessed. There was a significant
inverse correlation of mean pulmonary artery pressure with
DWI and PVDW. Both the mitral valve replacement patients
had significant improvement in RV function. After intracardiac repair, two children had evidence of RV dysfunction
comparable by both methods. The sensitivity and specificity
suggest that TDI is suitable for clinical use, considering its low
cost, short acquisition time and simple and rapid analysis. A
follow-up echocardiography at 6 and 12 months postoperatively is also planned.
Right Ventricular Dysfunction in Patients
with Chronic Constrictive Pericarditis: A
Tissue Doppler Imaging Study
405
Vimal Mehta, Ajay Raj, Bishwa Bhushan Bharti,
S Ramakrishnan, Naresh K Goyal, Saibal Mukhopadhyay,
Jamal Yusuf, Bhola Shankar Vivek, Ashutosh Sahu,
Naveen Bhamri, Sanjeev Kathuria, Vijay Trehan, Sanjay Tyagi
Echocardiographic evaluation of right ventricular (RV)
function remains challenging due to the complex RV anatomy
and near field artifacts. Tissue velocity imaging is a newer
technique for quantitative analysis of regional and global right
ventricular function. Limited data exists on systolic and
diastolic function of the right ventricle in patients with chronic
constrictive pericarditis (CCP). Tissue Doppler imaging was
performed in 35 cases (male: 22; age: 22 ± 8.1 years) with
surgically proven CCP using Vingmed GE System Five. Peak
systolic (Sa), early diastolic (Ea) and late diastolic (Aa) tissue
velocities were obtained by pulsed tissue Doppler imaging of
tricuspid free wall annulus and compared with 30 age- and
sex-matched healthy controls. All patients with CCP showed
markedly decreased systolic and early diastolic tricuspid-free
wall annular velocities. The tissue velocities in CCP and
controls are given in the table.
RV (2D) (cm)
Sa (cm/s)
Ea (cm/s)
Aa (cm/s)
CCP
Controls
p value
1.7±1.4
13.9±3.1
11.6±2.3
8.5±4.1
1.6±1.3
16.3±3.2
18.2±3.3
13.2±4.4
NS
<0.001
<0.001
<0.001
We conclude that there is significant impairment of tricuspid
free wall annular velocities in patients with CCP. Further
studies are required to ascertain the clinical significance of
these interesting findings.
J.p65
537
Spectrum of Transesophageal
Echocardiography in a Tertiary Care Center
406
A Sanghvi, S Mattummal, H Shah, B Thakkar,
C Lanjewar, P Nyayadhish, P Nathani, P Kerkar
Transesophageal echocardiography (TEE) is requested
when poor transthoracic window results in sub optimal
imaging or when posterior cardiac structures need to be
defined better. We reviewed the indications leading to TEE
evaluation and the results of this investigation in 233 patients
who had been investigated at our center in the last five years.
Indications
Yes
No
Total
Left atrial/atrial appendage clot
Suitability for ASD device closure
Presence of intra-cardiac shunt
Native valve infective endocarditis
Rupture of sinus of Valsalva
Intra-cardiac tumors
Residual shunt, S/P ASD device closure
Prosthetic valve function
Prosthetic valve infective endocarditis
Delineate RVOT/LVOT
Cardiomyopathy
16
43
15
4
4
2
2
12
2
6
2
37
46
31
6
3
2
1
53
89
46
10
4
2
5
14
2
6
2
ASD: atrial septal defect; LVOT: left ventricular outflow tract; RVOT: right
ventricular outflow tract
At our center TEE was frequently used to rule out left atrial/
atrial appendage clot prior to balloon mitral valvuloplasty or
external cardioversion for atrial fibrillation/ flutter, to assess
suitability of ASD device closure, to evaluate for the presence
of intra -cardiac shunt and for prosthetic valve evaluation.
Minor local bleeding was observed in eight patients while six
patients developed adverse reactions to local anesthetic
complication. Major complications like esophageal rupture
were not observed.
Effect of Mitral Restenosisin in Left Atrial
Appendage Function after Balloon Mitral
Valvotomy
407
KC Goswami, S Anandaraja, NK Goyal, VK Bahl
Balloon mitral valvotomy (BMV) improves the depressed left
atrial appendage (LAA) function which is maintained during
follow-up in the absence of restenosis. However, no study has
assessed the effect of restenosis on LAA function. LAA
function, ejection fraction (EF), filling (FV) and emptying
velocity (EV) were prospectively studied in 100 consecutive
patients with severe mitral stenosis (age 29.2±8.4 years; 52
males) by transesophageal echocardiography. All the patients
11/24/2005, 11:16 AM
Indian Heart J 2005; 57: 532–542
underwent successful BMV and were regularly followed up for
mitral valve area (MVA) and LAA function. During the followup of up to 60 months, 20 patients developed restenosis (mean
age 30.4±8.0 years; 12 males). The LAA function parameter
of these patients are shown in the table.
Pre-BMV
MVA
(cm2)
LAA EF
(%)
EV*
FV*
Post-BMV
60 months FU
Restenosis
Control
0.78±0.15 2.02±0.28
1.87±0.35
0.98±0.2
39.2±11.6 53.3±12.1
52.1±13.2
40.4±8.4
61.1±10.2
20.0±8.4
32.7±10.8
24.0±11.1 35.9±11.2
33.8±8.0
38.1±8.4
22.0±8.0
26.0±12.0
46.6±18.3
46.0±21.6
MVA: mitral valve area; LAA: left atrial appendage; EF: ejection
fraction; EV: emptying velocity; FV: filling velocity
There was significant improvement in all the parameters of
left atrial (LA) function immediately after BMV, which was
maintained during follow-up in the absence of restenosis.
Patients who had restenosis showed deterioration in all the
parameters of LAA function. One patient developed LAA clot
during follow-up. Improved LAA function after BMV again
deteriorated after restenosis and worsened to pre-BMV levels.
We conclude that if restenosis is not relieved, the LAA
dysfunction may lead to LAA clot formation.
Effect of Mitral Restenosis on Pulmonary
Venous Flow after Balloon Mitral Valvotomy
408
KC Goswami, NK Goyal, S Anandaraja, R Yadav
The pulmonary venous flow (PVF) normally shows systolic
and diastolic flow with systolic velocity greater than diastolic
velocity. In mitral stenosis, the pattern is changed. After balloon
mitral valvotomy (BMV) the systolic and diastolic flow are also
reversed and reach near the level of controls (systolic duration
more than diastolic) which is maintained during follow-up in
the absence of restenosis. However, no study has assessed the
effect of restenosis on PVF pattern. We prospectively assessed
the PVF in 100 consecutive patients with severe mitral stenosis
by transesophageal echocardiography before and after BMV
and at regular intervals. During follow-up of up to 60 months,
20 patients (mean age 30.4±8.0 years 12 male) developed
restenosis and their PVF parameters are shown in the table
below.
Sys vel
Sys dur
Dia vel
Dia dur
Re vel
Re dur
MVA
J.p65
Pre-BMV
32.1±17.9
203±62.6
35.4±10.0
296±131.8
19.4±8.1
108±49.9
0.78±0.15
Post-BMV
53.6±16.2
315±45.2
44.1±12.2
240±88.2
20.6±8.3
125±31.2
2.02±0.28
538
6-mon FU
53.2±14.2
322±48.4
40.0±12.6
244.4±64.1
22.4±8.0
134.3±26.8
1.87±0.35
Restenosis
34.2±18.1
210±64.4
36.4±8.4
294±132.4
19.6±8.0
110±40.4
0.98±0.2
Control
63.2±13.7
388±60.4
42.2±12.3
284±51.3
19.8±5.4
143.1±30
-
Sys vel: peak systolic velocity in cm/s; Sys dur: systolic velocity duration
in ms; Dia vel: peak diastolic velocity in cm/s; Dia dur: diastolic velocity
duration in ms; Re vel: peak reverse velocity in cm/s; Re dur: reverse velocity
duration in ms; MVA: mitral valve area in cm2.
We conclude that after mitral valve restenosis, the near normal
PVF pattern obtained after BMV returned to the pattern found
in severe mitral stenosis.
Color M-Mode and Tissue Doppler Evaluation
409
of Diastolic Function in Ischemic Heart
Disease Patients and its Simultaneous
Correlation with Invasively Assessed Left
Ventricular End-Diastolic Pressure
PV Dattatreya, B Ramesh, CN Manjunath, ST Yavagal
Left ventricular (LV) diastolic function can be assessed by
measuring LV end-diastolic pressure (LVEDP) and time
constant of LV pressure decay (tau). As these measures are
invasive, non-invasive methods of assessment of LV diastolic
function have been developed like transmitral and pulmonary
vein flow pattern. But, these are confounded by effects of atrial
compliance, left atrial pressure, pre-load, heart rate etc. Several
indices have been developed that can be determined using color
M-mode (CMM) echocardiography and tissue Doppler imaging
(TDI) and are found to correlate well with invasively assessed
LVEDP. This study sought to explore the validity of diastolic
indices derived from CMM and TDI in a population of ischemic
heart disease (IHD) patients by comparing with simultaneously
obtained invasively assessed LVEDP. LVEDP was assessed in 60
IHD patients undergoing diagnostic coronary angiogram.
Transmitral Doppler, pulmonary vein Doppler, TDI- assessed
annular motion velocities and CMM- derived flow propagation
velocity (Vp) were determined. Ratio of peak E mitral velocity
to septal motion annular velocities by TDI (E/Em) and ratio of
peak E mitral velocity to propagation velocity by CMM (E/Vp)
were obtained. LVEDP was calculated using the formula
5.27(E/Vp)+4.6. Echocardiographycally-derived values were
correlated with invasively determined EDP. We studied 60 IHD
patients who underwent coronary angiogram and assessment
of LVEDP [AMI: 28, unstable angina (USA): 18, stable angina:
14; mean age 59.8 years. male-female ratio 33:27.
Echocardiographic indices are as follows: mean Vp: 53.6 cm/
s (range: 24-80 cm/s), E/Vp: 0.9-2.9, mean Em septal annular
motion by TDI (Em) 10.4±4.7 cm/s, Am: 6.6±3.2 cm/s, E/
Em ratio: 10.9±5.6. Mean EDP 11.4 mmHg (range: 5-20
mmHg). There was good correlation between E/Vp ratio and
LV EDP ratio > 2 predicts LVEDP > 15 mmHg with 100%
sensitivity. Also non-invasively calculated LVEDP using
formula derived from Vp correlated with invasively measured
LVEDP. Though E/Em ratio predicted LVEDP, the correlation
was not as strong as that with E/Vp. Non-invasively determined
indices using CMM and TDI correlate well with invasivelyderived diastolic function. These indices can used to predict
LVEDP in IHD patients.
11/24/2005, 11:16 AM
Indian Heart J 2005; 57: 532–542
Significance of Echocardiographic
Evaluation in Neonates with Respiratory
Distress
410
Rakesh Jalota, SS Sarkar
Sarkar Diagnostics, Lucknow
The objective of this study was to evaluate the contribution
of congenital cardiac defects (CCD) in neonates with
respiratory distress in first week of life. Total 240 neonates with
respiratory distress were echocardiographed in detail. All
neonates were reassessed 6 weeks later and data was noted.
Total infants: 240 (males: 135, females: 105), normal 82
(34.16%), with CCD 158 (65.85%), full-term normal delivery
(FTND): 118, full-term cesarean section (FTCS): 97, premature
normal delivery (PMND): 18, premature cesarean section
(PMCS): 7. It was found that common defects among the
neonates having CCD was patent ductus arteriosus (PDA)
(43%), atrial septal defect (ASD) (11.39%), patent foramen
ovale (PFO) (10.75%), PDA+ASD/PFO (11.35%) and 25.9%
were associated with mild to significant pulmonary arterial
hypertension (PAH) (range: 32.11 mmHg - 64.17 mmHg,
mean 43.22 mmHg). Total percentile of CCD among the type
of birth viz. FTND, FTCS, PMND and PMCS were almost the
same. After six weeks, reassessment by 2D echocardiography
showed that all PDA, ASD, PFO and ventricular septal defect
(VSD) were closed except two large ASD and one subcostal VSD.
In neonates with respiratory distress, besides primary lung
problem another major factor is the congenital cardiac defect
with pulmonary artery hypertension (PAH) (25.94%). Its
probable reason is slow resolution of infantile pulmonary
circulation, perhaps due to the left-to-right shunt from CCD.
Within six weeks, majority of the neonates improved, CCD
closed and PAH was also normalized. It is concluded that all
the neonates with respiratory distress, if found to have CCD
with left-to-right shunt and PAH should be deferred from active
intervention, and managed medically upto 6 to 8 weeks as
there is significant chance of their improvement due to
spontaneous closure of left-to-right shunt and resolution of
PAH.
Tissue Doppler Imaging as a Superior Tool in
comparison to Conventional Modalities in
Assessment of Responders and Achieving
Better Synchrony in Cardiac
Resynchronization Therapy:
411
Binoy John, KM Cherian
Chennai
the same with a mortality of 25% at 1 year and 50% at 5 years.
Of late, cardiac re-synchronization therapy (CRT) has emerged
as an excellent non-surgical means of improving left
ventricular (LV) function by improving septal contraction,
reducing mitral regurgitation (MR) and preventing ventricular
remodeling. Conventional selection for CRT is based on more
subtle criteria as left bundle branch block (LBBB) with QRS
duration >120 ms, ejection fraction < 40% and NYHA class
III- IV. However, experience with these parameters has shown
that there were few responders to CRT. Thus emerged the
concepts for clear demonstration of inter- and intra-ventricular
dyssynchrony. Initially these were based on less accurate Mmode criteria. But evolution of tissue Doppler criteria have been
able to clearly differentiate responders and non-responders to
CRT. Our patient was a 56-year-old lady with only NYHA class
II dyspnea with a QRS duration of 160 ms and with an LV EF
of 22% and end-systolic dimension (ESD) of 52.8 mm, with
normal epicardial coronaries. Interventricular dyssynchrony
was demonstrated by an inter-ventricular mechanical delay
(IVMD) of 101 ms, which was defined as the delay between LV
and RV pre-ejection intervals as assessed from aortic and
pulmonary valve Doppler velocities. Intraventricular
dyssynchrony was demonstrated by a septal to posterior wall
motion delay (SPWMD) of 355 ms as assessed by M-mode of
LV in parasternal short axis (PSAX) view at papillary muscle
level. But, due to the fallacies of M-mode, tissue Doppler
imaging (TDI) was used to demonstrate intraventricular
dyssynchrony with 2 sample volumes at the septum and lateral
wall with a delay of 122 ms showing marked dyssynchrony.
With demonstration of clear dyssynchromny she was
categorized as a responder and bi-ventricular pacemaker
implantation was done. Thereafter, programming was done
again under the guidance of TDI, achieving a septal to lateral
wall delay in the range of 20 to 50 ms with the establishment
of excellent intra- and interventricular synchrony and
achievement of an EF of 35%, MR jet area of 2.3 cm2, though
her QRS duration had decreased only by 40 ms. She was
followed up at 2 weeks, 1st, 2nd, 3rd, 6th month and 1 year
with minor adjustments in the programming with TDI and at
1-year follow-up LV ESD was 43 mm without MR and EF
doubled to 45% with good functional status. Deviation from
conventional rules and implantation for only class II symptoms
led to marked improvement in LV parameters thus preventing
progression of failure and functional class. Going by
conventional goals, it may not be necessary to aim for a marked
narrowing of the QRS duration. A more sensitive and definitive
improvement in the intraventricular synchrony as assessed by
TDI should be the ideal target which will enable the
achievement of a wholesome ventricular synchrony and
improvement in LV function.
Dilated cardiomyopathy is a relatively common cause of
heart failure. But, despite improvements in the treatment of
congestive failure in the past decade, the outcome is essentially
J.p65
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Indian Heart J 2005; 57: 532–542
Correlation of Left Ventricular Filling
Pressure by Tissue Doppler Imaging and
Cardiac Catheterization in Patients with
412
Rashmi Gupta, Satish C Govind, B Jayakumar, R Keshava,
SS Ramesh, ASC Rao
Bhagwan Mahaveer Jain Heart Centre, Bangalore
Assessment of left ventricular (LV) diastolic function (filling
pressure) is of diagnostic and prognostic importance specially
in patients with coronary artery disease (CAD). Non-invasive
assessment of LV diastolic function can be done using various
echo Doppler parameters (i) Pulse wave (PW) doppler mitral
inflow waves (E&A, E/A ratio), deceleration time (DT) of mitral
inflow velocity (ii) PW tissue Doppler imaging (PW TDI) - E/e'
ratio, where E is initial mitral inflow velocity and e' initial
diastolic velocity of mitral annular movement. However, E/A
ratio and DT are influenced by presence of systolic dysfunction,
pre-load and other conditions. The aim of our study was to
investigate the reliability of E/e' ratio in estimating LV filling
pressure. So, we prospectively evaluated these PW Doppler and
PW TDI parameters in 48 consecutive patients with CAD who
underwent measurement of left ventricular end-diastolic
pressure (LVEDP) before coronary angiogram within 16±4.8
hours of echo Doppler studies. LVEDP was correlated with E/
A ratio, DT and E/e' ratio. We found good correlation of LVEDP
with E/e' ratio (r=0.982) compared to other parameters and
particularly when E/e' ratio was > 15, LVEDP was predictably
> 12 mmHg (sensitivity 87.8%, specificity 100%). We
conclude that simple, bed side PW TDI measurement of E/e'
ratio is an accurate and useful tool for non-invasive assessment
of LVEDP in CAD patients.
the assessment of left ventricular (LV) function and myocardial
contrast echocardiography (MCE) will provide increased
prognostic information over clinical variables in patients
presenting with suspected cardiac chest pain to an ER. A total
of 957 patients who presented with suspected cardiac chest
pain were enrolled from the ER and underwent MCE. A
thromobolysis in myocardial infarction (TIMI) score was
calculated from 7 clinical/laboratory variables as previously
described and a modified TIMI score (mTIMI) that excluded
serum cardiac marker was also derived. Wall motion and
perfusion on MCE were interpreted with all other clinical data.
Follow-up was performed for early and late primary (cardiac
death and myocardial infarction) or secondary (unstable
angina, heart failure, revascularization) cardiovascular events.
The mTIMI score was unable to adequately risk-stratify the
patients at an intermediate compared to a high risk for
developing an early event. In contradistinction, only 2/523
patients with normal motion on MCE had an early primary
event versus 61/434 with abnormal motion on MCE
(p=0.001). The presence of abnormal myocardial perfusion
provided prognostic information in those with abnormal wall
motion. Linear regression analyses showed that wall motion
and perfusion on MCE provide incremental prognostic
information over clinical variables for predicting early or late
primary, or any cardiovascular event. MCE can rapidly and
accurately provide short- and long-term prognostic
information in patients presenting to the ER with cardiac
causes of chest pain.
Comparison of Color M-Mode Propagation
414
Velocity Index and Posterior Aortic Wall
Echocardiogram with Invasive Measurement
of Left Ventricular End-Diastolic Pressure
Myocardial Contrast Echocardiography
413
Provides Superior Prognostic Information
Compared to Clinical Variables in Patients
Presenting with Chest Pain to the Emergency
Room
Khim Leng Tong, Diana Rinkevich, Xin-Qun Wang,
Wolfga Saul Kalvaitis, William A Foster, Todd Belcik,
Sanjiv Kaul, Kevin
Changi General Hospital, Singapore, and University of Virginia, USA
Chest pain is a common complaint in pateints presenting
to an emergency room (ER), but accurate diagnosis and
stratification of these patients is difficult. We hypothesize that
J.p65
540
A Guru Prakash, ST Yavagal, B Kumar, CN Manjunath,
B Ramesh, Bingi Ramamurthy, Venkataramiah,
KS Ravindranath
Sri Jayadeva Institute of Cardiology, Banglore
This study compared color M-mode propagation velocity
and M-mode posterior aortic wall echocardiogram with
invasive measurement of left ventricular end-diastolic pressure
(LVEDP) in coronary artery disease (CAD) patients. 58 patients
[ acute myocardial infarction (MI): 23, non-Q MI: 6, unstable
angina (UA): 29] were studied for LVEDP with both color Mmode propagation velocity and M-mode posterior aortic wall
echocardiography and correlated with LVEDP in
catheterization lab. Formula: 5.27(e/vp) + 4.6 mmHg was used
to calculate velocity propagation by color M-mode and Tm/
11/24/2005, 11:16 AM
Indian Heart J 2005; 57: 532–542
Am ratio > 0.5 was used as M-mode posterior aortic wall
echocardiogram. 42 patients had raised LVEDP on invasive
measurement and color M-mode propagation velocity index
had a sensitivity of 100% and specificity of 90% when
compared to M-mode posterior wall echocardiogram which
had a sensitivity of 96% and specificity of 86%. Patients with
coronary artery disease (CAD) and arrhythmias were excluded
from the study. In our study e/vp ratio was correlated well with
high LVEDP. It identified LVEDP >12 in 92% cases and >15
mmHg in 100 % cases. There was inverse relation between vp
and LVEDP formula to predict LVEDP has predicted EDP. Mmode posterior aortic wall echocardiogram had lesser
sensitivity and specificity of estimating LVEDP. VP
determination by color M-mode is a useful tool to assess LVEDP.
VP correlates inversely with LVEDP. E/VP >2 identifies patients
with LVEDP >15 mmHg. Formula to predict LVEDP correlates
well with invasive measurements.
Follow-up of Patients undergoing Cardiac
Resynchronization Therapy Using
2DEchocardiography and Tissue Doppler
Imaging: Are we Wiser?
Recent studies demonstrated benefit of cardiac
resynchronization therapy (CRT) even in patients with narrow
QRS complex provided they have mechanical dyssynchrony
(MD) on echocardiography (Echo). This study was conducted
to assess the role of Echo and tissue Doppler imaging (TDI) in
assessment of acute hemodynamic changes before and after
CRT in patients of left ventricular (LV) dysfunction with
varying QRS duration. Twenty consecutive patients (mean age:
63.8±8.7 years) of refractory heart failure were evaluated for
hemodynamic parameters, atrioventricular dyssynchrony
(AVD), interventricular dyssynchrony (VVD) [(AEP- PEP>40
ms and time delay between right ventricular (RV) free wall
interventricular septum (IVS) > 40 ms)], intraventricular
dyssynchrony (IVD) [septal posterior wall delay (SPWD) >130
ms and maximum delay between any two walls (Ts) >60 ms]
using echo and TDI. Subsequently pre- and post-CRT
parameters (mean values) were compared in patients with
electrical dyssynchrony (ED) (wide QRS >130 ms) and MD i.e.
VVD or IVD. All but 1 patient with documented MD showed
improvement in cardiac output (CO). Of them 6 patients with
SPWD >130 ms showed maximum benefit. Comparison of
different groups according to presence or absence of ED or MD
541
No. of patients
No. of patients with IVD
No. of patients
with VVD / AVD
Age (mean±SD) yrs
Ts (mean ± SD) ms
QRS duration
(mean ± SD) ms
% Change in
CO (mean ± SD)
% Change in
DFP/RR (mean ± SD)
% Change in
tei index (mean ± SD)
No. ED
ED
p value
No MD
MD
p value
5
5
15
10
-
5
0
15
15
-
2/1
59.8±7.2
86±23.8
7/6
64.6±8.8
79.3±42.0
-
1/1
69.2±8
36±14.7
8/6
61.46±7.35
96±30.25
-
120.4±7.2
155.1±14.57
-
155±11.2
143.6±21.9
-
24.96±13.97
21.70±24.4
0.78
3.17±17.33
26.97±19.7
0.018
7.4±8.05
7.73±14.6
0.96
5.6±7.1
9.5±0.08
0.49
-8.2±15.5
-8.6±20.2
0.97
-1.4±9.0
-24.2±17.7
0.014
A significant change in CO and ‘Tei’ index was found only
between patients with MD and no-MD (p= 0.018 and 0.013).
A trend toward improvement (although statistically not
significant) was also observed in DFP/RR in patients with MD.
Refinement of the selection criteria based solely on mechanical
measures of resynchronization is promising, but premature.
Analysis of both electrical and mechanical measures of
dyssynchrony may not only help us better select patients for
the CRT, but may widen the benefits of the therapy in groups
presently left out for the therapy.
415
RR Kasliwal, Simmi Manocha, NS Chouhan,
Aparna Jaswal, Govind Goyal, Jitender Singh,
Vanita Arora, TS Kler, N Trehan
J.p65
is shown in the table.
Non-invasive Estimation of Pulmonary
Vascular Resistance by Simple Technique
416
Saibal Mukhopadhyay, Jamal Yusuf, Mohit D Gupta,
Praveen Singh, Manish Sharma, Vimal Mehta, R Batra,
Vijay Trehan, Sanjay Tyagi
Pulmonary vascular resistance (PVR), an important
hemodynamic parameter is useful in assessing response to
pharmacological therapy in patients of pulmonary arterial
hypertension (primary or secondary). While serial right heart
catheterization to determine PVR is technically not feasible, a
reliable non-invasive technique is still not available. We
compared PVR derived by Doppler echocardiography with
catheterization-derived PVR in patients of mitral stenosis (MS)
undergoing successful balloon valvuloplasty. Thirty patients
of severe mitral stenosis (valve area < 1 cm2) in normal sinus
rhythm with echocardiography evidence of moderate or severe
tricuspid regurgitation (TR) formed the study group. PVR was
calculated by using the formula:
Doppler PVR = TRV/TVIRVOT×10+0.16 Wood units (WU)
Catheterization - derived PVR = PA (mean) - LA (mean)/ Qp WU
TRV: tricuspid regurgitant velocity; TVI RVOT : time velocity integral across
right ventricular outflow tract; Qp: pulmonary blood flow (cardiac output);
PA(mean): mean pulmonary artery pressure, LA (mean): mean left atrial
pressure
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Indian Heart J 2005; 57: 532–542
PVR derived by Doppler technique and by catheterization study
were determined before mitral valvuloplasty by Inoue balloon
and after valvuloplasty. Cardiac output was determined by
Fick’s method. Pre-valvuloplasty Doppler and catheterizationderived PVR were 5.04 ±1.89 WU (mean±S.D.) and
4.88±2.02 WU respectively while post-valvuloplasty Doppler
and catheterization-derived PVR were 2.67±0.96 WU and
2.69±1.03 WU, respectively. The difference between Doppler
and catheterization-derived PVR on analysis by paired t test
was not found to be significant (p>0.05), implying good
agreement between the two techniques. Calculation of
correlation coefficient (r) between TRV/TVI RVOT and
catheterization-derived PVR (r = 0.98) showed a high degree
of correlation. Doppler echocardiography may provide reliable,
non-invasive method to determine PVR.
significant difference with regards to revascularization of
dysfunctional segments and improvement of dysfunctional
segments was observed at long-term follow-up in the viable
group. Detection of viability on low-dose DSE is associated with
greater emphasis on complete revascularization during
surgery that translates into more significant improvement in
LV function. The functional recovery of dysfunctional
segments following revascularization is maintained at longterm follow-up.
Low-Dose Dobutamine Stress
Echocardiography Predicts Recovery of
Dysfunctional Segments and Wall Motion
Score Index following Revascularization by
418
RR Kasliwal, B Paul, A Mustaqueem, M Bansal
The Impact of Low-dose Dobutamine Stress
Echocardiography on Dysfunctional
Segments on Long-term Follow-up after
Surgical Revascularization
417
N Trehan, B Paul, A Mustaqueem, M Bansal, RR Kasliwal
In patients with ischemic left ventricular (LV) dysfunction,
low-dose dobutamine stress echocardiography (DSE) predicts
recovery of LV systolic function following revascularization.
We tried to assess the impact of low-dose DSE on dysfunctional
segments after revascularization. In a retrospective analysis
we studied 54 consecutive patients of LV systolic dysfunction
[left ventricular ejection fraction (LVEF) <40% by low-dose DSE
(16-segment model)]. Dysfunctional segments that improved
at low-dose DSE (20 µg/kg/min) were considered viable. The
patients were divided into viable (n=38) and non-viable (n=16)
groups to assess the dysfunctional segments. All patients
underwent surgical revascularization. At subsequent followup (3 months, 1 year and 2 years) the dysfunctional segments
were compared between the two groups. The mean number
of dysfunctional segments at baseline in viable and non-viable
groups were 9.5±3.3 and 8.2±2.9, respectively (p=NS). Mean
number of dysfunctional segments revascularized were
8.3±2.9 in viable group and 6.2±3.4 in non-viable group
(p=0.03). An improvement in 3.4±3.0 segments was observed
in the viable group and in 1.7±2.1 segments in the non-viable
group at the end of 2 years follow-up (p<0.001). A statistically
J.p65
542
The impact of viability determination by low-dose
dobutamine stress echocardiography (LDDE) prior to
percutaneous coronary intervention (PCI) is not adequately
represented in the Indian literature. We tried to assess an
improvement in wall motion score index (WMSI) following PCI
in those with viability. We retrospectively analyzed the data of
26 consecutive patients who underwent PCI following LDDE.
Viability was defined as an improvement in any dysfunctional
segment at LDDE (20 µg/kg/min). For the purpose of
comparison of WMSI and dysfunctional segments, the patients
were divided into viable (n=18) and non-viable (n=8) groups.
At 3 months follow-up, the WMSI, mean number of
dysfunctional segments revascularized and the mean number
of dysfunctional segments which improved were compared
between the two groups. The mean number of dysfunctional
segments was 7.1±2.2 in viable group and 8.7±3.3 in the nonviable group (p=NS). At LDDE, mean number of dysfunctional
segments that improved in the viable groups was 3.2±0.9
(p<0.001) and therefore a contractile reserve of 18.7 ± 7.0%
(p < 0.001). The WMSI at baseline was similar between viable
and non-viable groups (1.7±0.3 v. 1.9±0.2; p=NS), but
assumed difference of statistical significance at LDDE (1.6±0.3
v. 1.9±0.2; p=0.008). At 3 months follow-up, the WMSI
between viable and non-viable groups was statistically
significant (1.5±0.3 v. 1.9±0.3; p=0.004). Although the
number of dysfunctional segments revascularized were similar
between viable and non-viable groups (6.3±2.9 v. 6.2±2.6;
p=0.95) the number of dysfunctional segments which
improved was statistically significant (2.9 ±1.6 v. 0.90±2.3,
p=0.03). It is concluded that LDDE predicts recovery of
dysfunctional segments following PCI that manifests as an
improvement of WMSI at follow-up.
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Indian Heart J 2005; 57: 543–554
Epidemiology 543
Cardiovascular Risk Profile in Industrial
Populations across India: Results from the
CVD Surveillance in Industrial Populations
Study
419
KS Reddy, D Prabhakaran, Vivek Chaturvedi, P Jeemon,
R Lakshmy, M Singhi, S Goenka
All India Institute of Medical Sciences, New Delhi, on behalf of the
Investigators of the Sentinel Surveillance for CVD risk factors in
Indian industries
Cardiovascular diseases (CVD) are rapidly rising in India,
specially in urban areas. Here, we report the CVD risk factor
profile, in the employees and the families of 10 large industries
across India. Basic CVD risk assessment was carried out in a
representative cross-sectional survey in 19,973 adults aged
20-69 years (60% men), of which 10, 442 individuals (60%
men) underwent detailed assessment including biochemical
evaluation. The mean age of the population was 40±12 years
(men 41 years, women 39 years) and varied from 32 years at
Nagpur to 45 years at Delhi. Tobacco was being used by 40%
of men (22.6% in Hyderabad to 90% in Dibrugarh), while 15%
of non-smoking men were exposed to passive smoking
regularly. The overall prevalence of major risk factors in men
and women is given in the table.
Risk Factors
Hypertension
Diabetes mellitus
BMI > 23 kg/m2
Abdominal obesity
TC/HDL ratio ≥ 4.5
Triglycerides ≥ 150 mg/dl
Current smokers
Male % (CI)
30 (28-31)
11 (10-12)
51 (50-52)
40 (29-32)
43 (41-45)
32 (30-34)
21 (19-23)
Female % (CI)
25 (23-25)
8 (7-9)
52 (50-54)
33( 31-35)
32 (29-34)
20 (17-23)
0.2 (0-21)
BMI: body mass index; TC: total cholesterol; HDL: high-density lipoprotein
Most risk factors increased with age at all the centres. The risk
factor profile varied considerably across centres, with urban
centres having high prevalence of metabolic and obesityrelated risk factors. History of heart disease was elicited in 1.3%
participants while that of stroke was present in 0.3%. To
conclude, the prevalence of CVD risk factors in this nationwide, large survey was high at all centres, though the profile
of risk factors was different in varied settings. CVD surveillance
and prevention in work-force settings is likely to aid informed
decisions on policies and prevention.
K.p65
543
Treadmill Test in Asymptomatic Patients:
Have we Pressed the Panic Button?
420
F Panchal, N Tanwar, A Ranjan, SM Shah, K Jani,
K Fonseca, H Malhotra, S Shah, T Patel
Awareness about coronary artery disease (CAD) has
increased in general population. There has been a spurt in
health check-up schemes in hospitals. Many investigations are
clubbed together to offer early detection of CAD at a lower cost.
We retrospectively analyzed the results of one of the ‘cardiac
scheme’, which included a treadmill test (TMT),
echocardiogram and routine blood investigations. Patients
enrolled themselves directly to rule out CAD. From June 2004
to May 2005, 447 asymptomatic patients with a normal
electrocardiogram (ECG) and echocardiogram underwent TMT
at our institute. The TMT was interpreted according to ACC/
AHA guideline criteria. Majority of patients (339; 75.8%) were
men and the mean age was 47.7 ± 10.2 years (range: 19-72
years). Twenty-nine (6.4%) patients were diabetic, 109
(24.3%) hypertensive; dyslipidemia was present in 38 (8.5%)
and 40 (8.9%) patients were smokers. Family history of
premature CAD was present in 28 (6.2%) patients. Majority
of patients (311; 69.5%) had sedentary lifestyle. Multiple risk
factors were seen in 24 (5.3%) patients. All patients were
subjected to Bruce protocol. Patients achieved average METS
of 8.3±3.1 (range: 4-13 METS; median: 8 METS). The TMT
was negative in 389 (87.1%) patients, positive test result was
found in 49 (10.9%) patients and in 9 patients the TMT was
inconclusive due to poor effort tolerance. Patients with
negative TMT were reassured and advised to repeat TMT after
5 years. Importance of coronary risk factors, their control and
healthy lifestyle was explained to everyone. Out of those with
positive TMT, 35 (71.4%) patients were males and 14 (28.6%)
were females. Mean age was 53.5±10.5 years. Fifteen (30.6%)
patients were hypertensive, 11 (22.4%) patients were diabetic
and dyslipidemia was present in 30 (61.2%) patients. Twelve
(24.4%) patients had multiple risk factors. Patients with low
risk TMT (n=40) were explained about the CAD and
importance of modification of risk factors. They were advised
to remain in close follow-up, repeat TMT annually and to report
if any symptoms of CAD developed. Nine patients with high
risk TMT were subjected to coronary angiography. Out of those,
2 patients had significant triple vessel disease (TVD) and were
recommended coronary bypass surgery. Four patients had
critical left anterior descending artery (LAD) disease and were
subjected to coronary interventions, while other 3 patients had
non-LAD disease and were managed medically. To conclude,
there has been a substantial increase in asymptomatic patients
seeking cardiac health check up schemes. A negative TMT is
present in more than 87% cases and they can be effectively
reassured. The small number of patients with positive TMT
can be followed up regularly and their plan of management
can be optimized properly and early in their course of disease.
11/24/2005, 11:17 AM
Indian Heart J 2005; 57: 543–554
544 Epidemiology
Tobacco Chewing - A Potential
Cardiovascular Risk Factor: A Comparative
Study in a Tertiary Center
421
P Mukhopadhyay, AK Satpati, AK Khan, BK Chaterjee,
S Sadhukhan
Calcutta National Medical College, Kolkata
Tobacco chewing is a potential risk factor resulting in
adverse prognostic impact in chronic user. The aim of this
study was to evaluate the effect of prolonged tobacco chewing
on cardiovascular system (CVS) compared to smoking. One
hundred and fifty patients were evaluated thoroughly of which
50 were chewing tobacco or smoking for more than 10 years.
They were compared with the normal ones who did not take
tobacco in any form. Those having renal, endocrine or liver
disease, diabetes, or on drugs for CVS disorder were excluded.
Males outnumbered females with mean age of 48.36±8.20
years in tobacco chewer group. In this group mean systolic
blood pressure (SBP) was 132.04±24.44 mmHg, mean
diastolic blood pressure (DBP) was 85.72±15.5 mmHg.
Systolic hypertension (≥140 mmHg) was found in 38% and
diastolic hypertension (≥90 mmHg) in 54% of cases. In smoker
group, it was 47.58±9.62 years, 135.84±17.73 mmHg,
84.36±14.05 mmHg, 44% and 50%, respectively. Regarding
lipid profile (mg%) though closely matched, total cholesterol
and triglyceride (TG) levels were higher in smokers
(183.84±45.24 v. 180.62±31.22 and 125.2±71.79 v.
123.6±51.18, respectively), nearly similar low-density
lipoprotein-cholesterol (LDL-c) and very low-density
lipoprotein-cholesterol (VLDL-c) (115.9±39.44 v.
115.82±30.35 and 24.34±14.3 v. 24.7±10.25 respectively)
but high-density lipoprotein-cholesterol (HDL-c) was lower in
tobacco chewer group (43.96±12.1 v. 41.90±11.19
respectively). In comparison with controls, tobacco chewer
group showed significant (p<0.05) increase in blood pressure
(BP), total cholesterol, TG, LDL-c, VLDL-c and decrease in HDLc as seen in smoker group. This clearly established the
equipotent (some cases more) adverse effects of tobacco
chewing on CVS risk factors compared to smoking and need
for early and strict control for prevention of CAD.
Risk Factors for Coronary Heart Disease in
Indians : A Case-Control Study from Kolkata
422
Santanu Guha, Arnab Ghosh, PK Deb, S Chatterjee,
Sharmila Guha, Subrata Pal, Niloy Chatterjee
North Bengal Medical College, Darjeeling
Coronary heart disease (CHD) incidence is very high in
people of South Asian descent (originally from India, Pakistan
and Bangladesh). The purpose of this study was to examine
the association of risk factors with the development of CHD in
resident Indians. In this case-control study (150 cases, 176
K.p65
544
controls), age, sex, residence (urban v. rural), anthropometric
measures, educational level, physical activity, smoking status,
lipids, plasma glucose, blood pressure, chest X-ray and ECG
were obtained in a pre-designed schedule. Age, height, weight,
body mass index (BMI), and hip circumference were similar in
both groups. The results of the multivariate binary logistic
regression revealed that ‘odds’ of being ‘patients’ were at least
4 times higher for subjects with male sex [odds ratio (OR): 4.6,
p=0.001) and total cholesterol (TC)/high-density lipoprotein
(HDL) ratio of 4.4 (OR: 4.0, p=0.001)]. Logistic regression also
revealed that systolic blood pressure (BP) (OR=3.0), diastolic
BP (OR=3.6), fasting plasma glucose (FPG) OR=3.0), post-load
pressure gradient (PG) (OR=3.2), impaired fasting glucose
(OR=3.7), elevated TC (OR=3.0), elevated triglyceride
(OR=3.1), low-density lipoprotein (LDL) (OR=3.1), LDL/HDL
ratio (OR=3.4), central obesity (OR=3.0), smoking (OR=3.7)
and urban residence (OR=3.1) had significant (p<0.05)
adverse impact on CHD status. Interestingly, the prevalence of
low HDL was similar in both groups. Discriminant analysis
showed that 77.2% of all entry for patients and 72.6% of all
entry for controls were correctly classified using conventional
risk factors. Our results suggest that resident Indians with
multiple risk factors are at a substantially increased risk for
CHD and warrant early intervention for conventional risk
factors.
Prevalence of Coronary Artery Disease in a
Rural Community of North India
423
Rajeev Bhardwaj, Arvind Kandoria, Rajeev Marwah,
Bakshish Singh, Pravesh Dhiman, Avinash Sharma
Indira Gandhi Medical Collage, Shimla
The incidence of coronary artery disease (CAD) is on the
increase in India. There has been no study regarding the
prevalence of CAD from north part of the country, hence this
study was undertaken. Kunihar is a village situated about 40
km from Shimla. A team of six doctors did a family survey of
the village for 3 days, on holidays, so that majority of the
population could be screened. The team was divided into 3
groups of two doctors each. Each group was accompained by
an ECG technician. Persons above 30 years of age were
included in the study. Detailed history about having suffered
myocardial infarction (MI) and chest pain was taken. All
persons were subjected to 12-lead electrocardiogram (ECG)
and 23 (3.8%) persons were found to have CAD; out of these
19 (6.15%) were male and 4 (1.4%) were females. 17 patients
had old MI, and 6 had angina. Ten patients had undergone
coronary angiography, 3 each percutaneous transluminal
coronary angioplasty (PTCA) and coronary artery bypass
grafting (CABG). In conclusion, the prevalence of CAD in the
rural population of Himachal Pradesh is around 4%. It is
almost 3 times more common in males.
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Epidemiology 545
Tobacco Chewing is Associated with Greater
Cardiovascular Risk : A Population-Based
Study
424
BK Gupta, RB Panwar, AN Kaushik, Rajeev Gupta,
Anjli Gupta, Sadiq, VP Purohit
SP Medical College, Bikaner
Chewing tobacco is a widely prevalent practice in India. We
studied 200 subjects who are in the habit of chewing tobacco
for at least 10 years. All the subjects were divided into two
groups depending upon life time total tobacco consumption
(Group A persons weighing <40 kg, group B > 40 kg) and
compared them with well-matched 200, non-tobacco users
healthy subjects (Group C). The results are shown in table.
Parameter
Age (years)
BMI (kg/m2)
WHR
Pulse rate
SBP (mmHg)
DBP (mmHg)
(mmHg)
TC (mg/dl)
(mg/dl)
HDL (mg/dl)
LDL (mg/dl)
VLDL (mg/dl)
Mean values
Group A Group B Group C
A–B
41.8
24.01
0.90
82.69
129.11
86.34
82.85
177.25
111.76
44.43
109.38
22.36
0.9052
0.0014
0.0386
0.0310
0.3327
0.8047
0.1190
0.1272
0.9513
0.0350
0.2674
52.47
23.94
0.93
80.15
134.28
87.70
83.17
186.56
121.23
44.50
120.17
23.73
46.73
24.10
0.91
79.95
128.94
82.58
82.33
169.74
105.42
48.41
99.09
21.09
p values
A–C
0.8590
0.1502
0.0031
0.9273
0.0005
0.6474
0.0793
0.1284
0
0.0074
0.1303
B–C
0.7299
0.0030
0.8226
0.0053
0 FBS
0.4670
0 TG
0.0003
0.0001
0
0.0027
BMI: body mass index; WHR: waist-hip ratio; SBP: systolic blood pressure;
DBP: diastolic blood pressure; FBS: fasting blood sugar; TC: total
cholesterol; TG: tryglyceride; HDL: high-density lipoprotein; LDL: lowdensity lipoprotein; VLDL: very low-density lipoprotein
Our study shows that tobacco chewing is associated with
greater cardiovascular risk.
Profile of Coronary Artery Disease in Coastal
425
Andhra Pradesh - An Institutional Review
DK Baruah, M Srinivas, NK Panigrahi
The purpose of the study was to analyze the angiographic
profile as well as risk factors of coronary artery disease (CAD)
in the coastal belt of Andhra Pradesh. Of the 2044 patients
who underwent coronary angiogram in our institute between
1999 and 2001, 1528 (74.75%) cases were found to have
significant CAD (Group A) and 516 (25.25%) had normal
coronaries (Group B). Both the groups were compared for
various risk factors and lipid abnormalities; 1356 (88.7%)
were male in Group A and 359 (69.6%) in Group B. Mean age
was 56±9 years and 57±10 years in Group A and Group B,
respectively. Number of cases with premature CAD (male <
45 years, female < 55 years) were 193 (12.6%). Angina was
the main clinical presentation (94.4%). Prior history of
myocardial infarction (MI) was present in 670 (43.8%) cases,
anterior wall myocardial infarction (AWMI) in 247 (36.8%),
K.p65
545
ASMI 133 (36.8%), inferior wall myocardial infarction
(IWMI) 280 (41.8%) and lateral MI in 10 (1.5%). 265 (17.3%)
cases presented with unstable angina and 66 (4.3%) had nonST elevation myocardial infarction (NSTEMI). Risk factor
analysis revealed diabetes in 534 (35%), hypertension in 725
(47.4%), tobacco use in 350 (23%), obesity in 164 (10.7%)
and family history of CAD in 96 (6.3%). Estimation of lipid
levels showed high cholesterol (> 200 mg/dl) in 31.2%, high
triglycerides (> 150 mg/dl) in 591 (48.5%), high-density
lipoprotein (HDL) (< 40 mg/dl in males) in 809 (74%), HDL (
< 50 mg/dl in females) 117 (86%) and low-density lipoprotein
(LDL) (> 130 mg/dl) in 377 (31.4%). Statistical analysis was
carried out using χ² test and compared between both the
groups. Diabetes was found to have significant association
(p=0.004) with CAD. In quantitative analysis, total cholesterol
was 185.3±41.8 mg/dl, triglycerides 167.2±88.07 mg/dl,
HDL 35.8±9.2 mg/dl, LDL 114.9±34 mg/dl and very lowdensity lipoprotein (VLDL) 32.8±18.6 mg/dl. Comparative
values between CAD group and normal coronary group were
analyzed (using t test). Significantly, low HDL cholesterol
(p=0.03) and high triglycerides (p= 0.05) were recorded in
CAD group. Coronary angiographic analysis revealed diffuse
coronary disease in 175 (11.5%) cases which included
multiple lesions involving segments of coronary arteries. 492
(32.2%) cases had single vessel disease, 402 (26.3%) 2-vessel
disease, 503 (32.9%) 3-vessel disease and 131 (8.6%) had left
main disease. In this angiographic review equal prevalence of
single or multivessel CAD was recorded and diabetes was found
to be the most significant risk factor. Analysis of lipids revealed
low HDL-cholesterol and high triglycerides in significantly
more number of patients with CAD.
Profile of Lipid Abnormalities in
Hypertensive Urban Population of
Dibrugarh District of Upper Assam
426
Arijit De, RK Kotokey, S Hazarika,
BC Kalita, RK Dhanwar
Assam Medical College and Hospital, Dibrugarh
A population-based study was conducted for a period of one
year from 1 April 2003 to 31 March 2004, on 1005 persons,
selected from a population of approximately two lakh of urban
dwellers of Dibrugarh town of Upper Assam, to analyze the
lipid profile of the hypertensive population. All subjects with
hypertension, as per the criteria laid down by JNC VI, 1997
and JNC VII, 2003, without any history of renovascular
hypertension, renal parenchymal disease, pregnancy-induced
hypertension, or receiving hypolipidemic drugs were included
in the study. A total of 280 (27.9%) persons from the study
population, were found to be hypertensive, of which 151 (54%)
persons were dyslipidemic with maximum incidence (26.1%)
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Indian Heart J 2005; 57: 543–554
546 Epidemiology
in the age group of 50-59 years. 34.4% had elevated total
cholesterol (>200 mg%), 25.2% had elevated triglycerides
(>200 mg%), 33.1% had elevated low-density lipoproteincholesterol (LDL-c)(>130 mg%), 22.5% had low high-density
lipoprotein-cholesterol (HCL-c)(<40 mg%). Female
hypertensives had significantly higher values of triglycerides
(TG) than males (p < 0.01) while total cholesterol, HDL-c, LDLc were higher in males (p <0.001). Both males and female
hypertensives had significantly higher values of total
cholesterol, TG, LDL-c as compared to controls
(p < 0.001). The present study puts footsteps on the pattern of
lipid abnormalities in the hypertensive patients of the urban
population of Upper Assam.
lipoprotein (HDL-c) was higher in Delhi population (36±9.5
mg/dl v. 44.2±10 mg/dl, p<0.001). The mean levels of serum
lipids and fatty acids were significantly different in these two
populations, which is likely the result of different dietary habits.
The risk factor profile was more atherogenic in
Thiruvananthapuram compared to Delhi.
Influence of Initial and Subsequent
Motivation on Control of Hypertension and
Risk Factors in Rural Punjab
428
Vitull Gupta, Sonia Gupta
Kishori Ram Hospital, Bhatinda
Comparison of Serum Lipids and Fatty
Acids Levels in Thiruvananthapuram and
Delhi: Results of Sentinel Surveillance
Program in Indian Industrial Population
427
D Prabhakaran, L Ramakrishnan, P Jeemon, R Gupta,
V Chaturvedi, M Singhi, KS Reddy
All India Institute of Medical Sciences, New Delhi on behalf of the
Investigators of the sentinel surveillance for CVD risk factors in Indian
industries
Serum fatty acids levels in southern and northern parts of
India are expected to be different as major differences exist in
the prevalent dietary practices in these two regions. The aim
of this study was to compare serum fatty acid levels in two
different Indian populations. This analysis was carried out from
the data base obtained through the sentinel surveillance
system in Indian Industrial population involving 10, 442
individuals. We chose randomly 200 individuals from Delhi
and Thiruvananthapuram and compared their serum fatty
acid levels. Independent t test is used to compare the results
between two centres. The mean age of the population was 39.2
years in Delhi and 39.1 years in Thiruvananthapuram. The
mean saturated fatty acids levels (myristic acid 3.1±1.3 v.
2.17±0.6, p value <0.001; palmitic acid (24.2±3.2 v. 23±1.9,
p=0.01) were significantly higher in Thiruvananthapuram
compared to Delhi population whereas no significant difference
was noted in mean stearic acid levels. The mean poly- and
mono-unsaturated fatty acids (oleic acid 16.8±3.1 v.
19.1±3.1, p <0.001; linoleic acid 14.5±4.3 v. 20.7±4.8,
p <0.001; and linolenic acid 0.33 ± 0.5 v. 0.7 ± 0.5, p<0.001)
were significantly lower in Thiruvananthapuram population
whereas no significant difference was noted in mean
arachidonic acid levels. Correspondingly the total cholesterol
(239±39 mg/dl v. 176±36 mg/dl, p<0.001), the low-density
lipoprotein cholesterol LDL-cholesterol (176±52 mg v.
106±32 mg/dl, p<0.001), and the triglycerides (134±46 mg/
dl v. 125±63 mg/dl, p <0.001) were higher in
Thiruvananthapuram population while high-density
K.p65
546
We evaluated the influence of initial and subsequent
motivation in achieving normal blood pressure (< 120/80
mmHg) and improvement in risk factor profile like, weight,
body mass index (BMI), waist-hip ratio, smoking, alcohol and
exercise in randomized controlled study conducted in 400
patients (who completed the study) of hypertension. All were
above the age of 18 years attending the outpatient department
of our hospital. They were randomly divided into two groups,
Group I consisting of 200 patients was motivated at the start
of the study (initial motivation) and Group II of 200 patients
were educated and motivated at the start and every month of
their visit to the hospital for 6 months (subsequent motivation),
the duration of the study. Education and motivation included
interaction with patients, the printed and audio-visual
information about hypertension, complication, drug treatment
and importance of lifestyle modification in the course of
disease. The results are shown in the Table.
% (N)
Indicators
Male: Female
Group (I)
Initial motivation
(n=200) % (n)
Group (II)
Subsequent motivation
(n=200) % (n)
Start
End
Start
End
104:96
104:96
108:92
108:92
6 (12)
5 (10)
23 (46)
66 (132)
78 (156)
22 (44)
0 (0)
0 (0)
2 (4)
2 (4)
5 (10)
91 (182)
17 (34)
32 (64)
51 (102)
17 (34)
26 (52)
57 (114)
18 (36)
50 (100)
32 (64)
30 (30)
70 (74)
46 (44)
54 (52)
32 (34)
78 (74)
40 (36)
60 (52)
20 (20)
80 (88)
23 (20)
77 (72)
65 (130)
33 (66)
2 (4)
8 (8)
18 (18)
70 (140)
26 (52)
4 (8)
13 (14)
29 (30)
44 (88)
49 (98)
7 (14)
5 (4)
8 (8)
Blood pressure, mm Hg
>160/100
76 (152)
159-140/90-99
24 (48)
139-130/80-89
0 (0)
<120/80
0 (0)
2
Body mass index, kg/m
<18.5
17 (34)
18.5-24.9
28 (56)
>25
55 (110)
Waist -hip ratio
Males: >0.9
34 (34)
<0.9
66 (70)
Females: >0.8
48 (46)
<0.8
52 (50)
Exercise:
Sedentary:
74 (148)
Moderate:
24 (48)
Strenuous:
2 (4)
Smoking:
11 (10)
Alcohol
21 (22)
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Epidemiology 547
7th JNC report shows only 34% control rate of hypertension.
It also stresses on the role of motivation. In our study, control
rate was 66% in initial and 91% in subsequent motivation
group. All the risk factors showed improvement in motivation
groups more so in subsequent motivation group. We conclude
that education and motivation play a major role in improving
compliance, the control rate of hypertension and the
associated risk factors specially when patient is motivated and
educated on subsequent visits also. This part is often neglected
by the consultants.
Comparative Study of Ethnic Influences in
Age- Dependent Small and Large Arterial
Elasticity in Two Distinct Population Groups
in Pune and Goa
429
Nitin M Kulkarni, JS Hiremath, GV Prabhu,
Manisha Mehta
Poona Hospital and Research Centre, Pune, and
Goa Shipyard Limited, Goa
New methodologies are evolving to study functional and
structural changes in the arterial wall. Large epidemiologic
studies using standardized technique are easily possible for
early detection of cardiovascular dysfunction and time of onset
of age-related endothelial dysfunction. In cardiology clinics at
Goa and Pune, 2338 patients were examined for indices of
arterial elasticity using similar standardized techniques. We
analyzed radial artery waveforms using the HDI/pulse wave
CR-2000 cardiovascular profiling system caliberated
tonometer device. A computerized assessment of the radial
waveform morphology of large artery (C1) and in small artery
(C2) indices were analyzed. Patient data was prospectively
collected and progressive age-related changes in arterial indices
were studied. There were 1776 patients from Goa
(predominantly non-vegetarians) and 562 from Pune
(predominantly vegetarians). Patients were categorized
according to the age, as less than 39 years, 39-45 years, 4650 years and more than 50 years. Median values C1 and C2
for age- and sex-matched group less than 39 years 14.8 and
6.3, and 13.7 and 5.1, respectively. For age group more than
50 years individuals the values were 11.4 and 3.2; and 10.2
and 3.0 in Goa and Pune, respectively (p<0.01). Progressive
trend in age-related deterioration in arterial indices is observed
in both the ethnic populations. Progressive age-related
vascular dysfunction can be easily detected by simple noninvasive method and statistically significant favorable trend in
vascular function was observed in Goans as against in subjects
from Pune. This could be due to predominantly frequent
consumption of Feni and fish eating dietary habits in Goa as
compared to population in Pune who are predominantly
vegetarians with infrequent use of alcoholic beverages.
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547
Demographic Data and Outcome of Acute
Coronary Syndrome in the South African
Asian-Indian Population
430
N Ranjith, RJ Pegoraro, DP Naidoo
University of KwaZulu-Natal, Durban, South Africa
Significant differences in the prevalence of coronary heart
disease (CHD) exist with respect to gender, age, and ethnicity.
The disease has been reported to be higher in Indian
populations that have emigrated from the Indian subcontinent. The aim of this study was to examine differences in
major cardiovascular risk factors and clinical outcome in
South African Asian- Indians of different age groups and
gender, who presented with acute coronary syndromes . The
study cohort consisted of 2290 consecutive patients admitted
between 1996 and 2002 divided into 3 age subgroups: young
age (<45 years, 20%), middle age (> 45 < years; 59%), and
old age (>65 years, 21%). All 3 age groups were predominantly
male, but this was more evident in the younger (88%) and
middle age groups (71%), and became less striking as the
proportion of females increased with age. Smoking was found
more common in young men compared with young women
(p < 0.01). Diabetes mellitus (21%) and hypertension (18%)
were seen less frequently in young patients but this was
confined to men only. Total cholesterol was elevated in 65% to
70% of all patients whilst high-density lipoprotein (HDL) levels
were significantly lower in men compared with women for all
age subsets. Hospital mortality was extremely low in young
(1%) and middle-aged patients (2%), but was expectedly higher
in older patients (8%, p <0.0001). A family history of CHD
was the most common familal vascular disease seen. Young
patients were more often subjected to diagnostic and
therapeutic interventions. They had more aggressive disease,
with 48% of those subjected to angiographic studies having
triple vessel disease (TVD), and 14% undergoing coronary
artery bypass grafting (CABG). Triple vessel disease was also
detected most commonly in middle age (64%) and old patients
(75%). Significant differences in risk factor status exist in
South-African Indians between genders and for different age
groups. Also, young Indians differ from other young groups
with CHD in that they frequently have premature
atherosclerosis with diffuse and aggressive disease.
Lipoprotein(a) and Apolipoprotein E
Polymorphisms in Young South African
Indians with Myocardial Infarction
431
N Ranjith, RJ Pegoraro, L Rom, MC Rajput, DP Naidoo
University of KwaZulu-Natal, Durban, South Africa
Lipoprotein(a) [Lp(a)] and apolipoprotein E (ApoE)
polymorphisms have been shown to be important genetic
determinants of cardiovascular risk in Asian Indians who are
at high risk for this disease. The aim of this study was to
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548 Epidemiology
examine the association of the Lp(a) promoter pentanucleotide
repeat polymorphism and the apoE codon 112 and 158
genotypes in 195 young South African Indian patients (< 45
years) with myocardial infarction (MI). Results were compared
with 300 healthy age-matched control subjects drawn from
the same community and 107 unaffected siblings (18-45
years). Besides, fasting lipograms were performed on all
patients and a detailed history of conventional risk factors and
family background was obtained. Of the six different Lp(a)
alleles detected, the 8-repeat sequence was most frequently
seen. However, no difference in frequencies existed between
patient and control groups. The most frequently occurring
apoE genotype in the three study groups was E3/E3 (patients
71%, siblings 70%, controls 70%). A significant difference in
the E3/E4 genotype was seen between patients and controls
(23% v. 14%, p=0.018) and between siblings and controls
(24% v. 14%; p=0.027). These patients were also more likely
to have significantly higher low-density lipoprotein (LDL) and
lower high-density lipoprotein (HDL) levels (p=0.005 and
0.045, respectively). No association was observed between any
of the Lp(a) or ApoE genotypes and conventional risk factors
such as smoking, diabetes, hypertension, obesity or a family
history of coronary heart disease. The apoE3/E4 genotype is
strongly associated with the incidence of MI in young South
African Indians. This genotype also adversely affects LDL and
HDL cholesterol levels, both of which contribute to premature
atherosclerosis. In contrast, Lp(a) pentanucleotide repeat
polymorphism does not appear to have any etiological role in
MI in this population.
Jakarta Cardiovascular Score : A Modified
Framingham Score for Estimating
Cardiovascular Risk Stratification in
Developing Countries
432
Dede Kusmana
University of Indonesia, National Cardiovascular Center, Jakarta
Cardiovascular disease is on the increase in developing
countries. Prevention program is the rational approach to be
implemented in the community. Framingham Score is already
in wide use to assess the risk for future cardiovascular event.
We developed Jakarta Cardiovascular Score as a modification
of Framingham Score based on gender, age, body mass index
(BMI), blood pressure, smoking, diabetes, and physical activity
through a cohort study. A 13 years historical cohort study was
done from the patients who were residing at three districts of
South Jakarta since 1988. Assessment included complete
history of cardiovascular risk factors (hypertension, was done
diabetes, hyperlipidemia, obesity, smoking, physical activity),
physical and laboratory examination, 12-lead
electrocardiogram (ECG) recording. Outcomes included
survival rate and all-cause mortality using verbal autopsy.
Statistical analysis using Cox regression, Kaplan Meyer and
Log rank. At last 479 participants were included in 13-year-
K.p65
548
cohort study. Mean age was 46 years (range: 25-64), 56%
patients were female. Cardiovascular mortality rate (including
stroke) was 1.2% per year and 42.9% of mortality was due to
heart disease. Jakarta cardiovascular score was formulated: (i)
Sex (female 0, male 1). (ii) Age/(years) (25-34=- 4; 35-39=-3;
40-44=-2; 45-49=0; 50-54=1; 55-59=2; 60-64=3). (iii)
Blood pressure (mmHg) (<130/<85=0; 130-139/85-89=1;
140-159/90-99=; 160-179/100-109=3; >180/ >110 =4).
(iv) BMI (kg/m2) (13.79-25.99 =0; 26.00-29.99 =1; 30.0035.58 =2). (v) Smoking (Never =0, Ex-smoker=3; Smoker=4).
(vi) Diabetes mellitus (No =0; Yes =2 ). (vii) Physical exercise/
activity (No=2; Low=1, Medium =0, High =-3). The score was
divided for ten years prediction into low-risk (-7-1) with CV10
<10%, average-risk (2-4) with CV10 =10-20%, high-risk
(score > 5) with CV10 >20%. Jakarta Cardiovascular score is
a simple method to predict cardiovascular events in the
community.
Prevalence of Coronary Risk Factors in
Indian Population vis-á-vis Framingham
Cohort
433
G Venkatesh, M Ramanathan, CJ Reddy, KN Reddy
According to Framingham study, conventional risk factors
are absent in 15% to 20% of the coronary artery disease (CAD)
population. We analyzed 100 consecutive patients who
underwent coronary revascularization either by percutaneous
coronary intervention (PCI) or coronary artery bypass grafting
(CABG) (50 in each group). Diabetes mellitus, hypertension,
dyslipidemia, smoking, family history of CAD and age more
than 60 years were considered as conventional risk factors.
Male to female ratio in our study was 4.9:1. Diabetes mellitus
constituted 62% and hypertension was present in 61%.
Dyslipidemia, family history of CAD and smoking were present
in 50%, 23% and 24% patients, respectively; 64% had normal
body mass index (BMI). 25% had overweight and 7% were
obese (BMI as per WHO criteria). Only 3% of patients had no
conventional risk factors; 97% had one or more risk factors,
77% had two or more risk factors. To conclude, conventional
risk factors still constitute the major risk in patients undergoing
coronary revascularization. This study further proves that
metabolic syndrome is a dominating risk factor in Indian
patients.
Angiographic Profile of Coronary Artery
Disease in Women in Urban Kerala
434
Coronary angiographic profiles of 131 consecutive female
patients subjected to coronary angiography were analyzed. Of
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Epidemiology 549
these, 107 (82%) patients belonged to the post-menopausal
age group. Sixty-one (47%) patients had normal coronaries;
78% of patients in this group had positive treadmill test (TMT).
Majority of patients in the <50 years age group had normal
coronaries (83%); 70 (53%) patients had abnormal coronaries,
of which 27% had single vessel disease, 24% had double vessel
disease, 33% had triple vessel disease and 16% had minimal
coronary artery disease (CAD). Left anterior descending artery
(LAD) was most commonly affected (76%). Left main coronary
artery (LMCA) was involved in 4% and coronary artery ectasia
was noted in 11 (16%) patients of which 6 were diabetic.
Percutaneous coronary intervention (PCI) was done in 28
(40%) patients, coronary artery bypass grafting (CABG) in 26
(37%) patients and medical management was advised for 16
(23%) patients. Among patients who underwent PCI, drugeluting stent (DES)was used in approximately 50% of lesions.
One patient with non-DES had re-stenosis.
Relevance of three Separate 10-Year
Predictive Risk Scores Developed for the
Caucasian Population to Asymptomatic
Indians at Baseline: Indian Atherosclerosis
Research Study
435
S Kanjilal, M Mukherjee, VS Rao, BK Natesha,
Narayana Hrudayalaya, Bangalore and Thrombosis Research
Institute, London, UK
The aim of this study was to examine the relevance of
British, European and Framingham predictive coronary risk
scores to the asymptomatic Indian population at baseline.
Three hundred and fifty-four unaffected family members from
93 families enrolled in the IAR study were included in the
analysis. The three scores displayed a statistically significant
correlation with one another (p<0.01) due to common
variables used in their computation. While 1% of the subjects
had high coronary risk scores as per the British and European
scoring systems, 7% had high risk scores as per the
Framingham scoring system. Relative to those with
corresponding low risk scores, subjects with high British risk
scores at baseline had significantly elevated levels of
lipoprotein(a) (p=0.004) and C-reactive protein (p=0.041).
Those with high European risk score had elevated levels of Creactive protein (p=0.022); and those with high Framingham
score had elevated levels of triglyceride (p=0.014),
lipoprotein(a) (p=0.017) and interleukin-6 (p=0.041). Despite
the association of lipid and pro-inflammatory markers with
high coronary risk scores, it may be more relevant to develop
predictive coronary risk scores on a test population of Indian
origin for application to the Indian population.
K.p65
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Quality Control Measures in an
Epidemiological Study
436
R Gupta, R Lakshmy, M Sharma, D Prabhakaran,
V Chaturvedi, M Singhi, P Jeemon, KS Reddy
All India Institute of Medical Sciences, and Center for Chronic Disease
Control, New Delhi
Measurement of lipids and lipoproteins are necessary for
the diagnosis and clinical management of disorders of
lipoprotein metabolism. A major limitation in large-scale
multicentric epidemiological studies is the need to perform
laboratory analysis in co-coordinating as well as in the
performing labs and ensure both reliability and validity of the
laboratory measurements. Ten Industrial centres from India
participated in a large collaborative study to identify
cardiovascular disease (CVD) risk factors (n = 10442). We
carried out lipid measurements both at the central and the
individual laboratory. To ensure quality control we performed
the following: (a) For internal quality control – we estimated
inter-assay and intra-assay coefficient of variation and plotted
Levey-Jenning curves. (b) We randomly analyzed 10% of all
the samples from each centre (c) We exercised external quality
control by providing blinded lyophilized samples to the centres
and compared the measurements of the individual labs with
the mean values of all the labs including coordinating lab. The
results were expressed in terms of ‘Variance Index’. Lower the
variance index better is the performance of the lab. The interassay and intra-assay coefficient of variation were <2% and
3% respectively for all the participating labs. Levey-Jenning
curves for internal quality control samples were monitored
closely. None of the labs performance was outside ± 3 SD.
Coefficient of variation for random analysis of 10% of all
samples was < 5% except for one centre [(for high-density
lipoprotein-cholesterol (HDL-c)]. Twenty distributions of
lyophilized external quality control samples were distributed.
Nine labs out of ten had a variance index of < 1.0 by the end
of the distribution. We have demonstrated a simple method of
establishing quality assurance in 10 different laboratories of
India. The model would be useful in standardizing laboratories
for lipid measurements across the country.
Clinical, Epidemiological, and Cytogenetic
Studies in Rheumatic Heart Patients in
Vellore Population
437
K Thirumal Babu, Radha Saraswathy, P Mugundan,
P Bhuvaneswary
Government Vellore Medical College Hospital, and
Vellore Institute of Technology, Vellore
Rheumatic heart disease (RHD) is known to be a major
public health problem and has a very high prevalence in and
around Vellore. The aim of this study was to analyze the
clinical, epidemiological and cytogenetic aspects of RHD
patients. This study is the first of its kind done in Vellore
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Indian Heart J 2005; 57: 543–554
550 Epidemiology
population. The present study included 200 known RHD
patients. Clinical, epidemiological and pedigree data were
recorded for each individual. The cytogenetic studies were
carried out in 50 patients by analyzing the frequency of
chromosomal abnormalities in 50 to 100 Giemsa stained
metaphases in each individual. The chromosomal
abnormalities including gaps ranged from 6% to 28% in those
individuals, whereas in the normal (control) individuals it was
0% to 8%. With the help of complete pedigree analysis a
possible mode of inheritance pattern was predicted. From this
study the possible number of candidate genes associated with
the mutation resulting in the disease can be narrowed down.
Further, the individuals in the high-risk group can be identified
and monitored. Thus early treatment of these individuals could
possibly be used to prolong and improve their quality of life.
Secondly, identification of a disease-associated mutation also
allows for better family planning and pre-natal diagnosis,
whereever appropriate. A true teamwork between the patient,
clinician and genetic counselor can provide the highest
standard of patient care.
Prevalence of Hypertension in a
Rural Community of North India
438
Rajeev Bhardwaj, Arvind Kandoria, Rajeev Marwah,
Bakshish Singh, Pravesh Dhiman, Avinash Sharma
Indira Gandhi Medical College, Shimla
Hypertenson (HT) is a common disease which often remains
unrecognized. There has been no study regarding the
prevalence of HT from this part of the country, hence the
purpose of the study. Kunihar is a village situated about 40
km from Shimla, with a population of around 2000. A team
of six doctors did a family survey of the village for 3 days, all
on holidays, so that majority of population could be covered.
In all 799 adults were screened; 377 were males. JNC 7 criteria
were used for diagnosing hypertension. Out of 339 (31.3%)
persons found to be hypertensive, 176 (31.4%) were males and
0-12
years
Age
n
RHD
M
F
283
168
451
49
30
79
(17.5%)
13 - 25 years
26 - 45 years
>45 years
Sex
n
M
F
M
F
M
F
129
161
62
246
228
282
1108
Total
CAD
2
0
13
26
72
81
194
(12.4%)
Cardiovascular Disease in Afghanistan:
Lessons from a Community Outreach
Programme
A 12 days programme was initiated at Kabul and Herat
(Afghanistan) to assess pattern of heart disease under the aegis
of Community Outreach Programme of our Institute. We
studied 1559 patients (702 males, 857 females) 1 to 82 years
old. A detailed Proforma was filled with history, clinical
examination and diagnosis. Electrocardiogram (ECG), exercise
treadmill test and echocardiography were done in relevant
cases to support the diagnosis.This effort was the first of its
kind to find out pattern of heart disease in Afghanistan. This
data shows large burden of coronary artery disease (27.44%)
and rheumatic heart disease (18.40%) in adult age group.
Patent ductus arteriosus (19.95%) and ventricular septal
defect (19.73%) were common in congenital heart disease
group. Though this data is possibly not representative of the
entire population in general because of referral bias, however,
it does emphasize the need for systematic epidemiological
assessment and subsequent medical measures.
51
58
26
31
77
89
(17.0%)
(19.7%)
Age group (13-82 years)
CAD+HT
CAD+DM
0
0
10
40
53
69
172
(11%)
439
Ravi R Kasliwal, Sameer Shrivastava, Manohar Shinde,
Govind Goel, Arif Mustaqueem, Niraj Gupta,
Pankaj Gupta, N Chouhan, M Bansal, Naresh Trehan
Age group (<12 years)
ASD
VSD
Sex
Total
163 (31.3%) were females. In population aged more than 30
years, in which primary HT is more common, out of 599
people studied, 309 were males and 290 were females. 56.9%
of this population were having HT (56.6% males and 56.2%
females). Only 72 hypertensives were aware of their disease
and only 12 (16.6%) of them were controlled. In conclusion,
more than 50% of the rural population was found to be
hypertensive. Majority of them were unaware of the disease
and in 86% of the people who were aware, the HT was not
controlled.
1
0
3
4
10
15
33
(2.11%)
PDA
TOF
Other
CHD
Noncardiac
61
29
90
(19.9%)
11
05
16
(3.5%)
22
23
45
(9.9%)
31
24
55
(12.1%)
CAD+HT+
DM
0
0
2
2
10
15
29
(1.86%)
HT
DM
RHD
4
7
6
32
58
68
175
(11.22%)
5
8
6
24
16
20
79
(5.0%)
90
96
10
79
9
3
287
(18.4%
Noncardiac
27
50
12
39
00
11
139
(8.9%)
RHD: rheumatic heart disease; ASO: atrial septal defect; VSD: venticular septal defect; PDA: patent ductus arteriosus; TOF: tetrology of fallot; CHD: congenital
heart disease; CAD: coronary artery disease; HT: hypertension; DM: diabetes mellitus
K.p65
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Indian Heart J 2005; 57: 543–554
Prevalence of Obesity in Patients admitted
with Acute Anterior Wall Myocardial
Infarcton and its Relation to Pre-Discharge
Left Ventricular Ejection Fraction
Epidemiology 551
440
RPS Bhardwaj, Mohd Ahmad, Ramesh Thakur,
CM Varma, J Rajagopal, Amit Gupta, Suvir Gupta
This study aimed to assess the prevalence of obesity as
defined by body mass index (BMI) and waist hip ratio (WHR),
which is an important risk factor for coronary artery disease
(CAD) and its relation to the left ventricular ejection fraction
(LVEF) (at discharge), which is an important marker for
survival post-myocardial infarction (MI). 128 consecutive
patients (90 male, 38 female) admitted with first episode of
acute ST elevation MI (STEMI) (>2 mm in any 2 leads from V2
to V 6) treated with thrombolysis were classified into 4
categories according to BMI(<20, 21-25, 26-30, >30 kg/m2)
and WHR (<0.85, 0.85-0.99, 1-1.2, >1.2). Patients with inhospital mortality were excluded. A 2-D echo was performed
on 3rd to 6th day post- MI and LVEF calculated by estimation
of wall motion index (rounded) by an observer blinded to
patient data. Analysis was done with SAS software. Prevalence
of overweight and obesity on the basis of BMI was 38% and
15% in men and 48% and 24% in women; whereas that based
on WHR was 45% and 20% (men) and 56% & 26% (women).
Mean LVEF in men was 42%, 41%, 46% and 48% and in
women was 40%, 42%, 42% and 44% in the BMI categories.
It was 40%, 44%, 46% and 44% (men) and 38%, 42%, 46%
and 46% (women) in the WHR categories. Obesity is highly
prevalent in MI patients admitted with MI. It has no significant
relationship with LVEF after MI in men, but seems to have a
positive co-relationship in women. The relative risk and
specificity of BMI and WHR remains to be further investigated.
Intra-Urban Disparities in Cardiovascular
Risk Factor Prevalence among Indian Males
441
Rajeev Gupta, P Rastogi, H Prakash, M Sarna,
N Bhagat, MR Soangra, VP Gupta
Monilek Hospital and Research Centre, and University of Rajasthan,
Jaipur
There is a wide variation in prevalence of cardiovascular
diseases and mortality in different Indian regions. To evaluate
whether there are significant differences within an urban
location we performed serial epidemiological studies.
Successive epidemiological Jaipur Heart Watch (JHW) studies
were performed in Rajasthan locales in rural (JHW-R, years
1992-93, n=3148) and urban studies (JHW-1, 1993-94,
n=2212; JHW-2, 1999-2000, n=1123; JHW-3, 2002-03,
n=458; and JHW-4, 2004-05, n=887). The studies included
adults >20 years evaluated using standardized methodology.
JHW-R, JHW-1 and JHW-2 were population-based while JHW3 and JHW-4 included specific ethnic groups. For the present
analysis we included males in age-group 20-59 years (1700,
K.p65
551
1294, 469 and 179 in various groups respectively, n=3642).
Prevalence of various coronary risk factors: tobacco use,
sedentary habits, overweight/obesity (body mass index >25
kg/m2), truncal obesity, hypertension, diabetes, dyslipidemias
and metabolic syndrome were determined and trends
analyzed. The prevalence of tobacco use and smoking was
significantly greater in rural (50.0%) as compared to urban
groups (25.4%) while overweight/obesity, truncal obesity,
hypertension, diabetes and hyper low-density lipoprotein (LDL)
cholesterolemia were significantly greater in the urban cohorts
(p<0.05). Within the urban cohorts there were significant
differences in risk factors. In population-based cohorts (JHW1 and JHW-2), over a period of 7 years, there was a significant
increase in mean body mass index (BMI), total and LDL
cholesterol, and triglycerides and decline in high-density
lipoprotein (HDL) cholesterol (p<0.05). Compared to JHW-2,
in community-specific groups of JHW-3 and JHW-4 (different
geo-ethnic groups) prevalence of risk factors, obesity (BMI >30
kg/m2) (14.0% v. 24.9%), central obesity (55.7% v. 75.6%),
hypertension (33.5% v. 47.8%), diabetes (11.8% v. 13.8%), and
metabolic syndrome (22.5% v. 36.8%) was significantly
greater while smoking (17.7% v. 2.5%) was lower (p<0.05).
The present study shows significant intra-urban and urbanrural differences in prevalence of major cardiovascular risk
factors (hypertension, high cholesterol, diabetes and low HDL)
in India. Community-specific and risk factor targeted cardiovascular preventive approaches are recommended.
Awareness of Heart Disease among General
Population in Punjab: A Pilot Survey in
Healthy Hospital Visitors
442
Charles T Itty, TM Jaison
The coronary artery disease (CAD) rates in India have
increased substantially. However, the awareness about heart
disease among the masses is inadequate. We interviewed 100
healthy hospital visitors on consecutive days in our hospital
with the help of a questionnaire regarding their awareness of
coronary risk factors and perceptions about CAD. Mean age
was 40.39±10.08 with 67 males and 33 females. Sixty-one
subjects had education only upto 10th standard or less.
Majorty of subjects (54%) considered themselves as having
poor (<25%) knowledge about CAD; 28 subjects said that they
have no knowledge regarding heart disease. Nevertheless most
of the subjects (96%) felt that one should seek immediate
medical attention if anybody develops symptoms of CAD.
Forty-five candidates thought that heart disease is the leading
cause of death in India, however, only 18 subjects saw heart
disease as a major health problem. Only 64 subjects said that
a patient developing acute coronary syndrome (ACS) will have
chest pain. Various other symptoms reported include sweating
(31%), giddiness (26%), shortness of breath (21%), anxiety
(21%) etc; 59 candidates identified stress as a risk factor for
heart disease. Only few subjects knew about the major
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Indian Heart J 2005; 57: 543–554
552 Epidemiology
coronary risk factors (smoking 10%, high cholesterol 14%,
hypertension 10% diabetes mellitues 4%, over weight 15% and
lack of exercise 15%). Fifty-five subjects believed that regular
exercise can prevent CAD; 46 (46%) candidates felt that
reducing dietary fat is important and 36 of them considered
stress control as a preventive measure. Most of them (80%)
were interested in acquiring more knowledge about CAD;
however, only 14 of them had ever discussed this with a health
care provider. Significantly more number of females reported
that they have no knowledge of the symptoms (n=6, p=0.03),
risk factors (n=8, p=0.041) or preventive measures (n=10,
p=0.006) of CAD. More subjects with higher education
(beyond 10th standard) and better income (>Rs. 10,000/
month) felt that they have more knowledge about heart disease
(education p=0.002; income p=0.0382) compared to those
with lower education and lesser income. Higher number of
candidates with better education and income could enumerate
more coronary risk factors (education p=0.015; income
p=0.0416). Awareness of CAD risk factors and prevention was
poor in this group of healthy hospital visitors. It was
significantly worse in females and those who had lesser
education and lower income. Educational interventions to
improve CAD awareness are the need of the hour to control
this modern day 'epidemic'.
High Prevalence of Metabolic Syndrome-X
in Siblings of Patients with Angiographically 443
Proven Coronary Artery Disease in Young
Indians
Prakas Chandra Mondal
Apollo-Gleneagles Hospital, Kolkata
Twin epidemics of diabetes and coronary artery disease
(CAD) is striking the Indian populations much more
prematurely at the peak of their productive life. This study
sought to find out the prevalence of metabolic syndrome-X,
the earliest metabolic risk expression for premature
atherosclerosis, in siblings of patients with angiographically
proven CAD. Siblings of 60 patients (Group 1, n=30) and
siblings of 40 age- and sex-matched control (Group 2, n=70)
having normal coronary angiogram were evaluated for
abdominal obesity [body mass index (BMI) and waist-hip ratio
(WHR)], systemic hypertension, dyslipidemia [high low density
lipoprotein cholesterol (LDL-c), low high-density lipoprotein
cholesterol (HDL-c) and high triglyceride level], glucose
intolerance and high plasma insulin level. Mean age of G1 and
G2 were 37.6±12.4 years, and 36±10.4 years, respectively
and male-female ratios were 8:5 and 5:2, respectively. There
were statistically significant differences in prevalence of
metabolic syndrome between two groups (p<0.001) in only
male subjects. Prevalence was low and statistically not
significant in female siblings. Regarding isolated
manifestations of metabolic syndrome-X, all features were
highly prevalent in G1 male subjects in compared to G2 male
subjects except systemic hypertension which is equally
K.p65
552
prevalent in both groups. In conclusion, siblings (specially
males) of young patients with angiographically proven CAD
should be searched for the metabolic markers of premature
atherosclerosis to institute early prevention strategies to fight
against twin epidemics of diabetes and coronary artery disease.
Clinical and Angiographic Profile of
Coronary Artery Disease in Western Punjab
444
Chetan Sharma, GS Nagpal, HK Nagpal
Nova Heart Institute and Research Centre, Bathinda
Present study was carried out to find out clinical and
angiographic profile of coronary artery disease (CAD) in a
defined geographical area. 208 patients were enrolled for the
study from January 2004 to January 2005. The age range was
21-90 years with mean age of 57.4 years. There were 142
(68.2%) males and 66 (31.8%) females. Of 208 patients, 50
(24.03%) were diabetic, 146 (70.19%) were hypertensive, 62
(29.8%) were smokers. The family history of premature CAD
was found in 50 (24.03%) patients, while 96 (46.15%) were
obese (waist-hip circumference ratio >1). 80 (38.46%) patients
had chronic stable angina (CSA) as clinical presentation while
unstable angina (USA) and acute myocardial infarction (AMI)
were noted in 52 (25.0%) and 44 (21.15%) patients,
respectively. Angina equivalent symptoms (syncope, fatigue,
palpitation) were noted in 24 (11.53%) patients and congestive
heart failure in 10 (4.80%) patients. Single vessel disease (SVD)
was seen in 74 (35.57%) patients, while 44 (21.15%) and 64
(30.76%) patients had double vessel disease (DVD) and triple
vessel disease (TVD) respectively. Six (2.88%) patients had left
main coronary artery (LMCA) disease, 12 (5.76%) had normal
coronaries, 2 (0.96%) had recanalized coronaries, while 2
(0.96%) patients had coronary anomalies [(left circumflex
(LCx) artery arising anomalously from right coronary sinus].
Left anterior descending (LAD) artery was the main vessel
involved in 144 (69.23%) patients while right coronary artery
(RCA) and LCx and LMCA were involved in 72 (34.62%), 42
(22.19% and 8 (3.84%) patients, respectively. The lesion
morphology was complex: Type C in 36 (24.47%) patients,
Type B in 76 (55.88%) patients while Type A lesions were seen
in 24 (17.64) patients. Thus it is concluded that CAD
population of Western Punjab has clinical and angiographic
profile akin to North Indian population with the exception that
hypertension, central obesity and smoking are the major
coronary risk factors. Almost 50% patients had involvement of
more than one coronary artery and lesions were more complex.
Prevalence of Coronary Artery Disease in
Women
445
PR Abhaichand, S Suvasini
This study aimed to assess the prevalence of coronary
artery disease (CAD) in women. 789 females who underwent
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Indian Heart J 2005; 57: 543–554
Epidemiology 553
coronary angiography (CAG) between December 2001 and
2004 formed the cohort. Clinical, risk factor profile and
angiographic findings were analyzed. Mean age of the cohort
was 57.16 years. Overall, 579 had angiographically proven
CAD (> 50% diameter stenosis) and 210 had no significant
CAD. There was a steady increase in percentage of CAD as
age increases (37% in 31-40 years to 87% in > 60 years). The
study patients were divided into two groups (Group I - postmenopausal, Group II: pre-menopausal). Group-wise analysis
showed 492 (77%) had CAD in Group I. Mean age was 60.64
+ 7.06 years. Diabetes mellitus (DM) was seen in 239
(48.58%), systemic hypertension (SHT) in 315, (64.02%),
dyslipidemia (DLP) in 90 (18.29%). Family history of CAD in
52 (10.5%); 195 (39.6%) patients presented with acute
myocardial infarction (AMI) and 172 (34.9%) presented with
unstable angina (UA). Disease pattern was triple vessel disease
(TVD): 217 (44%), double vessel disease (DVD): 103 (20.9%)
and single vessel disease (SVD) : 172 (34.9%) and left main
disease (LMCD) : 33 ( 6.7%). Univariate analysis showed
significant association of SHT, DM, DLP and family history of
CAD (p = 0.005). Multivariate family history analysis showed
DM as the variable showing strong association with CAD. In
group II, mean age of presentation was 48.48 + 7.27 years.
DM was seen in 35 (40%), SHT in 48 ( 55%) and DLP in 32
(36%) and family history of CAD in 13 (15%). Eighty-seven
(57%) had CAD. SVD in 40 (45.9%) DVD 22 (25.29%), TVD
25 (28.74) and LMCD 5 (5.7%). SHT, DLP and DM were found
to have significant association with CAD in univariate analysis,
but DLP emerged as the most significant variable associated
with CAD in mulivariate analysis. We conclude that CAD is
prevalent in significant number of females in both groups. TVD
is seen in higher age group. Traditional risk factors have
significant association with CAD.
Normal Coronary Artery Dimensions in
Kerala Population — An Angiographic Study
446
Babu Vasudev, Kader Muneer, Shyam Kumar,
Vinayakumar, CG Sajeev, Johnson Francis,
CC Velayudhan, K Venugopal
Traditional way of expressing severity of coronary artery
stenosis is by percentage stenosis. Hence, it may be erroneous
in patients with diffuse coronary artery disease (CAD).
Prediction of normal coronary dimensions may overcome the
inadequacies of percentage stenosis in diffuse CAD. There is
no published data regarding normal coronary artery
dimension in south Indians. Hence, this study was conducted
to find out normal coronary artery dimensions in Kerala
population. All consecutive patients with normal coronary
angiograms were selected from our coronary angiogram
database from January 2003 to October 2004. Patients with
structural heart disease, prior myocardial infarction (MI),
K.p65
553
diabetes and mild luminal irregularities were excluded from
the study. Of the total 58 patients, 30 were females and 28
were males. Mean age was 49.19 years. Fifty-one patients had
right dominant system, 6 had left and 1 had codominant
system. Left main coronary artery (LMCA) size varied from 3.2
to 6.8 mm with mean of 4.3 mm. Proximal left anterior
descending (LAD) 2.5 mm to 5.4 mm with mean 3.48 mm.
Left circumflex (LCx) size ranged from 2.1 mm to 4.7 with
mean 3.16 mm. Right coronary artery (RCA) 2 mm to 4.4 mm
with mean 3.15 mm. Mean diameters of posterior descending
artery (PDA) and PLB were 1.95 and 1.88 mm respectively.
Coronary dimension showed significant correlation with
gender, body weight and coronary dominance on multivariate
analysis. Based on these parameters, regression equations for
coronary dimensions were formulated. In conclusion,
coronary dimensions in Keralites are similar to western
population. Weight, sex and coronary dominance correlated
with coronary artery dimensions.
Pharmacoeconomics of Coronary Heart
Disease Prevention in India
447
Rajeev Gupta, Hari Prakash, Revant R Gupta, VN Sharma
Monilek Hospital and Research Center, Jaipur and Narsee Monji
College of Commerce and Economics, Mumbai
Coronary heart disease (CHD) has emerged as an epidemic
in India. National Commission on Macroeconomics and Health
has revealed that in 2002 there were 30 million patients with
this disease. This is projected to increase to more than 60
million by 2015. Preventive strategy in such patients includes
a lifelong commitment to multiple pharmacological agents and
comprehensive lifestyle changes. Evidence- based approach to
such patients includes a combination therapy of aspirin, statin,
beta-blocker, and angiotensin-converting enzyme (ACE)
inhibitor. We determined median annual costs of various
classes of cardiovascular drugs using a commonly available
pharmaceutical guide (Indian Drug Review, 2004). Median
annual retail costs (rupees per year) for usual doses of various
drugs were: antiplatelets (aspirin: 146, clopidogrel: 2263);
beta-blockers (antenolol: 621, metoprolol: 1095); statins
(simvastatin: 3760, atorvastatin: 2007, resuvastatin: 3103);
angiotensin-converting enzyme (ACE) inhibitors (ramipril:
2555, lisinopril: 2519, enalapril: 1131, perindopril: 2153),
calcium channel blockers (amlodipine: 657, nifedipine: 475,
diltiazem: 2190); angiotensin receptor blockers (losartan:
1423, telmisartan: 2518); and diuretics (hydro-chlorothiazide:
475, frusemide: 146). Median annual retail cost of an
evidence-based poly-therapy (polypill) that includes ramipril
(5 mg), atorvastatin (10 mg), aspirin (150 mg) and atenolol
(25 mg) would be Rs. 5,329. As CHD knowledge, awareness,
diagnosis, and treatment levels are very low in India, at a lower
end of spectrum (7.5 million patients) a cumulative cost of
such a treatment would be Rs. 4000 crore. However, in an
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Indian Heart J 2005; 57: 543–554
554 Epidemiology
optimistic scenario where more than 90% of the patients are
on this therapy the costs could be as high as Rs. 14,300 crore.
This cost translates into 0.3% to 1.2% of the current Indian
gross domestic product. If other indirect costs to patients
(≈50% of pharmaceutical bill) are included, this would
translate into 0.6%-2.4% of the gross Indian domestic product,
a very large amount by all standards. The CHD epidemic has
massive cost implications for India. Focus in prevention should
move away from pharmacological approaches to lifestylerelated therapies.
Prevalence of Coronary Risk Factors in
Asymptomatic Subjects Attending Preventive 448
Health Check up
Asha Mahilmaran, S Sowjanya, Chandrasekaran,
I Sathyamurthy, Udaya Balasubramanium
Apollo Hospitals, Chennai
A total of 2318 people above the age of 20 years (male:
1446, females: 872), who attended preventive health check
up at our hospital between June and August, 2004 were
included in the study. 48.5% of the people had body mass index
(BMI) > 25; 47.9% of the people had waist-hip ratio (WHR) >
0.9 (men), >0.85 (women). There was a significant increase
in BMI, WHR after the age of 30 years (p <0.001). Multivariate
analysis showed that increase in BMI correlated with
triglyceride, diastolic blood pressure levels and had no
correlation with low-density lipoprotein (LDL), high-density
lipoprotein (HDL), systolic blood pressure, fasting and postprandial sugar levels. WHR correlated with fasting sugar levels.
There were 21% of people with known hypertension. The
incidence of hypertension increased with age 3.4%, in 20 –
29 years, 10.3%, in 30–39 years, 22%, in 40–49 years, 38%
in 50–59 years and 41% in above 60 years. 23% had newly
detected hypertension, 26.5% had pre-hypertension. Known
diabetes mellitus (DM) was present in 17%, newly detected DM
in 13%, impaired fasting glucose > 100mg/dl in 34.3% of the
people. Total cholesterol (TC) > 200 mg/dl was present in 36%,
HDL, < 40 mg/dl (males), 50 mg/dl (females) in 37%, LDL >
130 mg/dl in 25%, triglyceride (TG) > 150 mg/dl in 41% of
the people. Combined dyslipidemia of high LDL + low HDL was
present in 6%, high TG + low HDL in 18%, high LDL + high
TGL in 13%, triad of high LDL, high TG, low HDL levels was
present in 10% of the people. The metabolic syndrome was
present in 17.5% (ATP III criteria). On multivariate analysis,
there was a significant increase in TC and TG levels with age,
BMI, WHR but LDL, HDL levels did not vary with age, BMI,
WHR; 17% of the people were smokers. To conclude, there is
an increase in the prevalence of conventional risk factors, with
the exception of smoking, and aggressive life style change is
warranted. Lipid lowering therapy to reach the goal levels of
LDL and TGL is advised.
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Public Knowledge of Heart Attack in a
Population Survey in Nepal
449
Yuba R Limbu, Rabi Malla, Shyam R Regmi, Ramesh
Dahal, Hari L Nakarmi, Ganesh Yonzan, Ritu P Gartaula
SG National Heart Center, and Stupa Health Care & Research Center,
Kathmandu (Nepal)
Limited knowledge of heart attack symptoms may prevent
patients from seeking time-dependent thrombolytic therapy an intervention that offers impressive survival benefit.
Previous studies carried out in developed countries
demonstrated deficiency of knowldedge about wide range of
heart attack symptoms. The aim of this study was to profile
the knowledge of heart attack, its symptoms and the
anticipated first response to symptoms among the lay public
in Nepal. A total of 1192 participants (657 men, 535 women),
16 to 88 years were interviewed in a cross sectional manner.
Subjects below 16 years of age, all health professionals and
individual with history of heart attack were excluded. A total
of 862 (72.3%) respondents had heard of heart attack.
Significantly, more male participants had heard of heart attack
than female participants (p<0.001). 91.7% respondents with
educational attainment of ≥ years 10 had heard of heart
attack, while only 54% respondents with educational
attainment of <10 year or who were illiterate (unable to read
and write) had heard of heart attack. In both male and female
population, higher percentage of the > year 10 education
group had heard of heart attack than < years 10 education
or illiterate group (92.6% v. 60% and 85.6% v. 49.6%).
Significantly higher number of 31 to 50 years age group
respondents had heard of heart attack than 16 to 30 years
and > 50 years age group (p<0.01). Among 862 respondents
who had heard of heart attack, 21.3% could not name any
heart attack symptom. A total of 16 different heart attack
symptoms were named. Faint/collapse (48%), chest pain
(22.4%), shortness of breath (9%), dizziness (8.4%), palpitation
(7.4%) and sweating (7.4%) were the leading symptoms
named by respondents. Faint/collapse was named more
frequently among > year 10 group respondents and 31 to 50
years age group males. Chest pain and shortness of breath were
named more frequently among ≥ year 10 group respndents
and >50 years age group males. Only 3.7% could name ≥2
typical heart attack symptoms. A significantly larger number
of ≥ year 10 group named ≥2 typical symptoms than their
counterparts (p<0.001). A large number (77.6%) of
respondents preferred immediate hospital referral/doctor
consultation after a heart attack. In Nepal, 31 to 50 years age
group, better educated males are more aware of heart attack.
Faint/collapse, chest pain and shortness of breath are leading
heart attack symptoms named by the general pupulation.
Public heart attack awareness is not adequate and knowledge
of wide range of heart attack symptoms is deficient in the
Nepalese general population.
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Indian Heart J 2005; 57: 555–561
Endoventricular Patch Plasty – Does
Ventricular Arrhythmias Bother You ?
Cardiovascular Surgery 555
450
M Ramanathan, G Venkatesh, CJ Reddy,
DJ Reddy, PSN Raju, KN Reddy
Endoventricular patch plasty (EVPP) in an emerging
surgical ventricular restoration procedure for patients in severe
left ventricular (LV) dysfunction with dyskinetic segments.
EVPP excludes ineffectively contracting segments with a
Goretex patch and reduces wall stress on the already ischemic
myocardium. Total number of 441 patients underwent EVPP
in our center from 1996 till date. We selected a subpopulation
of 62 consecutive patients who underwent EVPP from
February 2004 to January 2005 with age ranging from 36 to
72 years (average 57 years). Male-female ratio was 7.9:1.
When combined with an encircling endoventriculotomy, the
procedure effectively isolates the electrical substrate of
ventricular re-entry and may prevent ventricular tachycardia
(VT). Diabetes mellitus, hypertension and dyslipidemia were
present in 48%, 48%, 40% patients, respectively. The coronary
angiographic profile was single vessel disease (SVD) in 11.3%,
double vessel disease (DVD) in 21% and triple vessel disease
(TVD) 67.7%. All patients underwent (24-hour) Holter
monitoring on post-operative day 10. Holter study revealed
no cases of non-sustained (NS)/sustained VT, normal study
48.4%, VPCs < 10/hour 35.5%, VPC ≥ 10/hour 4.8%, atrial
fibrillation (AF) 3.2%. Two patients died in immediate postoperative period due to non-arrhythmic cause. One patient- a
redo coronary artery bypass grafting (CABG) case with EVPP
– died of cardiogenic shock; second patient, a case of
emergency CABG, died of septicemia. On follow-up (clinical/
telephonic interview) 59 patients had no mortality or
hospitalization; one patient had recurrent VT for which he
underwent automatic implantable cardioverterdefibrillator
(AICD). To conclude, the fear of ventriculotomy causing future
ventricular tachycardia should be allayed. In fact, EVPP
prevents ventricular arrhythmias in great majority of patients
by excluding the arrhythmic substrate as shown in our
experience.
Long-Term Survival in Endomyocardial
Fibrosis after Left Ventricular
Endocardiectomy and Mitral Valve
Replacement Surgery
451
Binoy John, Sanjay M Cherian, N Madhu Sankar, Pramod
K Jaiswal, BR Jaganath, KM Cherian
ventricular cavity and thromboses, typically found in regions
near the equator including India and Sri Lanka. It is an
otherwise aggressive disease with rapid deterioration and poor
prognosis, the medical management of which is at best
palliative and mostly refractory with a 35-50% 2-year
mortality. Operative excision of the fibrotic endocardium and
replacement of mitral and tricuspid valves lead to substantial
improvement. However, operative mortality is high, between
15-25% and long-term survival is still limited by recurrent
fibrosis and cumulative mortality, again limiting the overall
success of the operative approach. We describe the strategy of
left ventricular (LV) endocardiectomy and the long-term
follow-up of two patients who were offered the same along with
mitral valve replacement (MVR) surgery for predominant LV
EMF. One was a 25-year-old male evaluated for dyspnea on
exertion 19 years back and was found to have severe mitral
regurgitation (MR) with LV EMF suggested by LV cavity
obliteration which was later confirmed by histopathologic
examination from multiple samples at the time of
endocardiectomy. This procedure is characterized by the
removal of the fibrous endocardium from the mostly
unaffected and healthy myocardium, providing a wellpreserved plane of cleavage between the myocardium and the
thickened endocardium. MVR was done with a Bjork-Shiley
valve. He had been on frequent follow-up and at one time he
had atrial fibrillation (AF), which was treated with rate control
and after 19 years follow-up he developed prosthetic valve
dehiscence with severe para-valvular leak. Cardiac
catheterization was done with pressure studies, which showed
the typical ‘square root’ sign showing residual restriction; left
ventriculogram showed a rocking mitral prosthesis with a
Grade 4 para-valvular leak and coronary angiogram done was
normal. He was re-operated with just a re-suturing of the valve.
Echocardiographic evaluation showed a normal functioning
prosthesis. With concomitant medical therapy, he is
asymptomatic and back to his work. The second was a 59-yearold male who presented at the age of 31 years with palpitations
and was found to have AF, predominant LV EMF with severe
MR, good LV function and mild pulmonary arterial
hypertension. He was offered the same and has been on betablockers, aspirin, warfarin and digoxin. At 28 years of followup, he is essentially asymptomatic and walks 5 km every day.
The last evaluation showed a mitral prosthetic peak gradient
of 12 mmHg and mean gradient of 5 mmHg with Grade 2
tricuspid regurgitation and a pulmonary arterial systolic
pressure of 44 mmHg with good bi-ventricular function and a
focal calcific plaquing of the LV endocardium. Thus long-term
survival benefits and quality of life can be offered for an
otherwise refractory, debilitating disease with adverse
prognosis.
Chennai
Endomyocardial fibrosis (EMF) is a form of restrictive
cardiomyopathy with dense fibrous thickening of the
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Indian Heart J 2005; 57: 555–561
556 Cardiovascular Surgery
Off-Pump Coronary Artery Bypass Surgery in
452
Patients of Left Main Coronary Artery
Disease
Kamales Kumar Saha, Pradyoth Kumar Rath,
Mahesh Singh, Sunil Vanzara, S Bhagia,
Umakanth Patil, Ramakanta Panda
valve repair can be safely performed in properly selected group
of patients with rheumatic or degenerative heart disease.
Serial follow-up with two-dimensional (2D) color Doppler
echocardiography should be done on a regular basis postoperatively to assess valve function and measure left
ventricular ejection fraction (LVEF).
Left main coronary artery (LMCA) stenosis is considered to
a be risk factor for coronary artery bypass grafting (CABG).
The objective of this study was to assess the safety and efficacy
of off-pump coronary artery bypass (OPCAB) surgery for
patients with significant LMCA disease. This study was
performed using analysis of prospectively collected data of all
the patients who underwent OPCAB in our hospital from
January 2003 to 15 June 2005. Patients with significant (50%)
LMCA stenosis were selected for the study. During the study
period, total of 2175 isolated CABG operations were performed
in our unit. Out of them, 295 patients had significant LMCA
stenosis. All these patients underwent OPCAB with
cardiopulmonary bypass (CPB) standby. A total of 4 (1.36%)
patients had pre-operative intra-aortic balloon pump (IABP)
support. Average number of grafts per patient was 3.98. Only
15 patients received 22 vein grafts and remaining 280
(94.92%) patients received total arterial OPCAB. The early
mortality rate was 0.34% (n=1), neurological complication
rate was 1.02% (n=3) and atrial fibrillation rate was 6.78%
(n=20). We conclude that our technique of OPCAB is safe in
patients of LMCA stenosis. Total arterial OPCAB is safe in
patients with LMCA stenosis.
Mitral Valve Repair Surgery
Suresh Bhagia, Mahesh Singh, Sunil Vanzara,
Pradyoth Rath, Kamales Kumar Saha, Ramakanta Panda
453
The aim of our study was to evaluate various techniques
of mitral valve repair, popularized by Lillehei and Carpentier.
This retrospective study involved 18 patients undergoing mitral
valve repair from January 2003 to June 2005. Six patients had
isolated mitral valve repair done and almost half of this patient
subgroup had mitral valve repair + coronary bypass surgery.
Several techniques ranging from annuloplasty (4 Duran rings
and 9 Edwards bands) to chordal transfer, quadrangular
resection of posterior mitral leaflet (PML) of mitral valve were
used in this subset of the population. Transesophageal
echocardiography (TEE) was used in all patients
intraoperatively. There was no in-hospital death. Fifty-five
percent patients were free from atrial tachyarrhythmias during
their stay in the hospital and 45% patients were in sinus
rhythm post-operatively after one month. Cardiovascular
accident (CVA) occurred in none (0%). Renal complications
requiring hemodialysis was seen in one (5.5%) patient. Mitral
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Off-Pump Coronary Artery Bypass Surgery
Kamales Kumar Saha, Pradyot Kumar Rath,
Mahesh Singh, Sunil Vanzara, S Bhagia,
454
Even though off-pump coronary artery bypass (OPCAB) is
being practiced widely for last seven years, there is still
controversy about the safety and efficacy of OPCAB. Out of a
cumulative experience with 3467 OPCAB surgeries performed
by a single surgical team, we analyzed a single center data of
2175 consecutive patients operated over last two and half
years. All patients who underwent coronary artery bypass
grafting (CABG) at our institute, from January 2003 to 15 June
2005 were included in the study. The study was performed by
retrospective analysis of collected data. Out of 2175 patients
operated using OPCAB technique, one patient required
institution of cardiopulmonary bypass (CPB). Total number
of grafts per patient was 3.91. Only 83 patients received 118
vein grafts. The remaining 2092 (96.18%) patients received
total arterial bypass grafting. Our post-operative 30-day
hospital mortality rate was 0.64% (n=14), neurological
complication rate 0.73% (n=16), peri-operative myocardial
infarction (MI) 1.7% (n=37), re-operation for bleeding 0.55%
(n=12), post-operative atrial fibrillation rate was 5.65%
(n=123), deep wound infection rate 0.22% (n=5), superficial
wound infection rate 0.55% (n=12). We conclude that OPCAB
provides excellent early results with very low morbidity and
mortality. Using total arterial OPCAB in 96.18% patients, we
expect it will have superior long-term results.
LESS Procedure - Better than Traditional
Bypass Surgery?
455
Mahesh Singh, Kamales Kumar Saha,
Pradyot Kumar Rath, Sunil Vanzara, S Bhagia,
MIDCAB is usually performed using left anterior
thoracotomy wherein only the left anterior descending (LAD)
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Indian Heart J 2005; 57: 555–561
can be grafted. To expand its indications we have used partial
sternotomy approach (LESS procedure) in which LAD,
diagonals and ramus can be grafted by a small incision. In our
institution, 33 patients underwent LESS procedure; 9 had only
LAD grafting, 14 had LAD and diagonal, 8 had 2 diagonals
and LAD grafting and 2 had LAD, diagonal and ramus grafting.
There were 21 primary cases, 9 had history of myocardial
infarction (MI) and 3 cases of stent blocks. The age group was
17 to 72 years and there were 23 males. The incision was 2-3
inches long. There was no hospital mortality. LIMA was used
as the conduit in all patients. No blood transfusion was
required. Thirty patients were extubated on table. All had an
intensive coronary unit (ICU) stay of 12 hours and were
discharged on the post-operative day 5. In conclusion, it is
technically feasible to graft the LAD, diagonals and the ramus
by LESS procedure. Its advantages are early extubation, less
ICU stay, early discharge, less transfusion, less requirement of
pain-killers and better cosmesis.
Randomized Trial of Atorvastatin for
Reduction of Myocardial Damage following
Valvular and Congenital Shunt Lesion
Surgery
456
Mukesh Sharma, S Pandey, Aditya Kapoor, SK Agarwal,
Satyendra Tewari, Sudeep Kumar, N Garg, PK Goel,
Nakul Sinha
Myocardial necrosis, assessed by enzymes [CPK-MB,
troponin T (Trop-T)] elevation, is relatively frequent after
cardiac surgery, and is a marker of cardiac events. We
conducted a prospective study to analyze if pre-treatment with
statin therapy could have a bearing on enzyme release
following valvular and congenital shunt lesion surgery and
on events in post-operative course. A total of 62 patients
(mechanical valve replacement surgery: 46, and surgery for
intra-cardiac shunt lesions: 16) were included in this study.
Thirty-one patients were pre-treated with 20 mg atorvastatin
started at least ≥ 1 week prior to surgery while remaining 31
were without statin. Both groups were matched for age and
sex (mean age : 30.32±12.19 years v. 29.55±12.56 years;
male-female ratio was 16:15 v. 14:17). There was no
significant difference in type of surgery performed in these
groups [mitral valve replacement (MVR), aortic valve
replacement (AVR) or doube valve replacement (DVR), atrial
septal defect (ASD) or ventricular septal defect (VSD) closure].
There was no significant difference in NYHA functional class
and left ventricular ejection fraction (LVEF) (59.23±2.67% v.
57.41±8.2). Basal enzymes levels were similar in both groups.
Enzymatic release after surgery was more in no-statin group
versus statin group.
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CPK-MB (U)
Troponin-T (ng)
p value
Basal
8 hours
24 hours
Basal
8 hours
24 hours
Statin
group
14.81±
10.03
37.13
18.43
31.42±
24.50
0.030
0.61±
0.56
0.37±
0.32
<0.01
No-Statin
group
13.3±
8.6
66.47±
23.08
54.83±
22.50
0.029
1.38±
3.40
0.42±
0.46
<0.01
Statin pre-treatment prevented an enzyme elevation at 24
hours following surgery in a significant proportion of patients
(5/31, 16%) while the corresponding figure in control patients
was only (1/31, 3%) (p<0.01). There was no difference in
mean cardiopulmonary bypass time in both groups (88.26 v.
90.65 min) as well as post-operative amount of drainage
(458.6 v. 455 ml) but mean total hospital stay (10.44 v. 14.25
days) was much shorter in those pre-treated with statin. We
conclude that pre-treatment with statin (> 1 week before
surgery) is effective in reducing myocardial damage with
reduction in enzymatic release and better in-hospital outcome
after valvular and congenital shunt lesion surgery.
Prognostic Influence of Troponin-T
in Valve Surgery
457
RK Abhaichand, S Gomathi
To assess the prognostic influence of troponin T (Trop-T)
in valve surgery, 25 consecutive patients who underwent
surgeries for their valvular lesions formed the study cohort.
All patients had quantitative Trop-T and CPK-MB measured
at 12 hours and 24 hours post-surgery. They were also
assessed by echocardiogram post-operatively and compared
with pre-operative parameters. The mean age of the group
studied was 43.75 years; 14 were male and 11 female. Eight
patients underwent mitral valve replacement (MVR) alone, 6
had aortic valve replacement (AVR) alone, 2 had MVR with
tricuspid valve (TV) repair, 1 had AVR with MV repair and 1
AVR with TV repair. The mean value of Trop-T at 12 hours
post-operatively was 0.48 and at 24 hours was 0.40. Mean
CPK-MB was 25.6 and 23.5, respectively. The mean cardiopulmonary bypass (CPB) time was 91 min and aortic cross
clamp (ACC) time was 63 min. There was no death. Eight
patients had worsening left ventricular (LV) function postoperatively, though not clinically apparent. The mean Trop-T
and CPK-MB values at 12 hours and 24 hours were 0.6 ng/
ml, 0.8 ng/ml 0.48 and 29.2, 26.0, respectively. The Trop-T
and CPK-MB values in this group were significantly high
(p=0.05). To conclude, valve surgeries are associated with
increase in Trop-T and significant elevations are seen in
patients with worsening LV function though not clinically
apparent.
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Smoking Cessation Reduces Restenosis after
Coronary Artery Bypass Surgery: A 10-Year
Follow-up Study
458
Binayak Deb, Michael Walsh, Peter Crean
Kolkata and St James’ Hospital, Dublin, Ireland
The study aimed to determine the influence of smoking
cessation on restenosis after coronary artery bypass graft
surgery (CABG). The study cohort consisted of 1141 patients
who underwent CABG between January 1989 and December
1993. The smoking habits of these patients were retrieved.
They were classified as non-smokers/ ex-smokers or smokers;
327 patients had symptomatic re-stenosis requiring re-CABG/
prcutaneous transluminal coronary angioplasty (PTCA),
within 10 years. The results were analyzed in a multivariate
Cox analysis. Smoking status pre-CABG revealed that 56%
(639/1141) were smokers, 26.7% (305/1141) were exsmokers and 17.2 (197 / 1141) were non-smokers. Smoking
status post-CABG revealed 45% (514/1141) quit smoking and
55% (627/1141) continued to smoke. 29% (327/1141) had
symptomatic restenosis requiring repeat PTCA/ CABG within
10 years. In the restenosis group, 48% (156/327) were
smokers, 31%(101/327) were ex-smokers and 21% (70/327)
were non-smokers. Repeat intervention (PTCA/CABG) was
required in 19.2% (62/327) for those who quite smoking
compared to 79.8% (265/327) who continued to smoke. The
smokers who continued smoking had a greater relative risk
(RR) of restenosis (RR 1.68, 95% confidence interval: 1.33 2.13) as compared with patients who stopped smoking. The
quitters were less likely to undergo repeat CABG or a
percutaneous coronary angioplasty procedure (RR 1.41 CI:
1.02 - 1.94). To conclude, smoking cessation after surgery was
an important independent predictor of re-stenosis, and
patients who continued to smoke after CAB G had a greater
risk of restenosis requiring repeat CABG or percutaneous
angioplasty procedure than patients who stopped smoking.
Effect of Atorvastatin on Markers of
Inflammation in Patients with Acute
Coronary Syndrome
Revascularization Pattern in Female
459
Ankur Gupta, Charles T Itty, PP Khosla, TM Jaison,
Bharti Uppal, Dinesh Badyal
High-sensitive C-reactive protein (hsCRP), a marker of
vascular inflammation is a good predictor of atherosclerotic
cardiovascular disease. We prospectively studied the role of
atorvastatin (20 mg/day) in reducing hsCRP levels in 54
patients admitted with acute coronary syndrome. Mean age
of the patients was 55.33±9.7 years with 16 (29.6%) females
and 38 (70.3%) males. Twenty- four (44.4%) patients had ST
elevation myocardial infarction (STEMI), 3 (5.6%) had nonSTEMI (NSTEMI) and 27 (50%) patients had unstable angina.
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The incidence of various coronary risk factors included
smoking in 18 (33.3%) patients, hypertension in 23 (42.6%),
diabetes mellitus in 19 (35.2%) and family history of coronary
artery disease (CAD) in 20 (37.0%) patients. Patients were
divided into two groups. Group A (n=35) comprised of those
with low-density lipoprotein (LDL) cholesterol at admission >
100 mg/dl. They were given atorvastatin 20 mg/day for 30
days. No significant side effects were reported. Group B (n=19)
patients had LDL < 100 mg/dl at admission and they did not
receive atorvastatin. Fasting lipid profile and hsCRP was
measured at admission and at the end of 30 days. Both groups
were comparable regarding age, sex and risk factor profile
(p=NS). Both group of patients received all other cardiac
medications including aspirin. Mean baseline hsCRP of Group
A was 2.28 ± 2.11 mg/dl and that of Group B was 1.74 ±1.44
mg/dl (p=0.32). At the end of 30 days, the hsCRP levels
reduced by 70.6% in Group A while it decreased by 49.4% in
Group B. This difference did not reach statistical significance
(p=0.067). However, in smokers the hsCRP at 30 days was
significantly lower in Group A (n=10, hsCRP=0.81±2.15 mg/
dl) compared to group B (n=8, hsCRP: 1.34±0.9) (p=0.0159).
The mean LDL at admission was 134.43±31.44 mg/dl in
group A and 81.68±14.85 mg/dl in Group B (p≤0.0001. In
those who received atorvastat, in the LDL reduced by 40%
while in Group B the mean LDL increased by 30% (p=0.025).
HDL and triglyceride levels showed similar trends. Treatment
with atorvastatin (20 mg/day) showed a positive trend toward
reduction in hsCRP level in patients with acute coronary
syndrome (ACS). Atorvastatin produced significant reduction
in hsCRP levels in smokers admitted with ACS and may have
an important role in plaque stabilization in this group of
patients. To the best of our knowledge this is the first study on
South Asian Indian patients with ACS, clearly showing the
effect of atorvastatin in reducing hsCRP levels specially in
smokers.
460
Revascularization in coronary artery disease (CAD) among
females has not been as aggressive as in males. We, therefore,
decided to analyze revascularization pattern in our population.
The objective of this study was to analyze the revascularization
pattern in female cases of CAD. Out of 400 patients who
underwent coronary angiogram between May 2003 and
December 2004, 325 who had angiographically proven CAD
formed the study cohort. Of these, 229 patients were advised
revascularization. Percutaneous coronary intervention (PCI)
was advised in 100 patients (Group I), and coronary artery
bypass grafting (CABG) in 129 patients (Group II). Among
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the 100 patients, PCI was performed in 68 (68%), 38 had PCI
to left anterior descending (LAD), 15 to right coronary artery
(RCA), 5 to circumflex, 2 to Ramus, and 8 had 2-vessel PCI.
Out of the remaining 32, 20 (62%) were lost for follow-up, 12
(38%) did not undergo PCI for financial constraints. Among
the 129 patients who were advised CABG, 49 (38%)
underwent the procedure. Out of the remaining 80, 52 (65%)
were lost to follow-up and 28 (35%) did not have CABG due to
financial reasons. Both forms of revascularization
[percutaneous transluminal coronary angioplasty (PTCA) and
CABG] were done more in older age group. Fifty-one percent
of females with CAD underwent revascularization. There
seems to be a trend toward more females with CAD going for
PCI.
Pediatric Cardiac Surgery for All – A Long
Way to Go
461
S Ramakrishnan, Manish Sharma, Mohit Dayal Gupta,
S Anandaraja, Arima Nigam, Dinesh Raj,
Bishwa Bhushan Bharti, Naresh K Goyal, Vimal Mehta,
Saibal Mukhopadhyay, Jamal Yusuf, Vijay Trehan,
Sanjay Tyagi
Awareness of pediatric cardiac diseases is ever increasing
and with the better availability of echocardiography, more
number of patients are recognised to have serious cardiac
diseases. Yet, the number of patients ultimately able to undergo
successful surgical correction appears small in India and there
is a paucity of data in such cases. We followed 250 consecutive
patients (age range: 2 days -12 years; 168 male) who had
congenital heart disease, and who required surgical
intervention for a follow-up period of 2-6 months. The
diagnosis of patients requiring surgical intervention at initial
evaluation included ventricular septal defect (VSD) (n=58),
other left-to-right shunts (n=52), tetralogy of fallot (TOF)
(n=67), total anomalus pulmonary venous connection
(TAPVC) (n=10), and transposition of great arteries (TGA)
(n=7). Of the 250 patients, 17 patients opted for surgery in
some other center and 30 patients were lost to follow-up. Of
the remaining 203 patients, only 42 (20.7%) were willing to
undergo or had undergone surgery. Of the patients diagnosed
to have serious pediatric cardiac diseases, only one in five
patients landed up for surgery even in a tertiary care center.
Such data from the population could be still more alarming.
Bi-directional Glenn In Children more than 5
462
Years of Age - A Retrospective Study
SV Pagad, AG Narayanaswamy, G Sudarsana
Southern Railway Headquarters Hospital, Chennai
The aim of this study was to evaluate the causes of
morbidity and mortality in the immediate post-operative period
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in children undergoing Glenn shunt surgery who were more
than 5 years of age, as compared to those in the ‘traditional’
age group for Glenn shunt. A total of 23 patients underwent
Glenn shunt at our centre from 1998-2005. Majority of the
patients i.e. 19 (82%) were above 5 years of age; 20 (87%)
were male. The indications for Glenn shunt were tricuspid
atresia with pulmonary stenosis - 10 (43.4%), single ventricle
with pulmonary stenosis - 5 (21.7%), double outlet right
ventricle (DORV) with pulmonary stenosis (PS):3 (13%),
corrected transposition of great vessels (CTGV) with PS:3
(13%) and tetralogy of Fallot with PS with hypoplastic right
ventricle (RV): 2 (8.6%). In the immediate post-operative
period, the oxygen saturation improved from 72.90% (preoperative) to 86.69% (post-operative). Majority of patients [20
(86.9%)] required inotropic support for 24 hours. Average
period of ventilation was 15.75 hours, irrespective of age. Four
(17%) patients developed pleural effusion which did not require
any intervention. One patient developed transient complete
heart block (CHB) requiring temporary pacing for 12 hours.
One patient required re-exploration for increased bleeding.
Average duration of hospital stay was 9.78 days in the postoperative period. There was no peri-operative mortality. It is
concluded that bi-directional Glenn is possible with minimal
morbidity and no mortality in children who are above the
‘traditional’ age group prescribed for Glenn shunt. Therefore,
older age need not be a contraindication for bi-directional
Glenn Shunt surgery.
Triple Valve Replacement with Mechanical
Prosthesis – A Report of Two Cases
463
K Jai Shankar, N Madhu Sankar, BR Jegannath,
KM Cherian
Chennai
We report two cases of triple valve replacement (TVR) with
mechanical prosthesis. The first patient underwent TVR in
1998 with bioprosthetic valve and was subjected to redo TVR
with mechanical prosthesis in January 2005 due to
degenerated valves in mitral, aortic, tricuspid position. The
second patient underwent TVR with mechanical prosthesis
and coronary artery bypass grafting (CABG) × 1 graft in 2002.
Both the cases are doing well at follow-up with
echocardiography. Both the patients revealed normally
functioning prosthetic valves. In patients with multivalvular
heart disease usually the aortic and mitral valves are replaced
and tricuspid valve repair is preferred. In both our patients,
the tricuspid valve was severely diseased and not suitable for
repair and hence, all the three valves were replaced. In
tricuspid position, the choice of valve is controversial and tissue
valves are usually preferred due to thromboembolic
complications. However, with mechanical valves in other two
places, it is prudent to use similar valve in tricuspid position
11/24/2005, 11:19 AM
Indian Heart J 2005; 57: 555–561
also. Simultaneous valve replacement with myocardial
revascularization involves relatively higher risk than either
procedure alone. The risk is even higher in TVR with CABG.
Redo Off-Pump Coronary Artery Bypass
Suresh Bhagia, P Rath, Mahesh Singh,
KK Saha, S Vanzara, Ramakant Panda
465
Left Ventricular Pseudoaneurysm:
An Uncommon and Potential Cause for
Electro-Mechanical DissociationManagement Strategies
464
Binoy John, N Madhu Sankar, Pradeep Nair,
Pramod K Jaiswal, KM Cherian
Chennai
Left ventricular (LV) pseudoaneurysms are quite
uncommon, in comparison with true aneurysms and pose a
unique surgical challenge. Due to its high propensity (30-45%)
for rupture and impending electro-mechanical dissociation
due to cardiac tamponade, it requires an urgent surgical
intervention. Pseudoaneurysms contain ruptures and
therefore its wall is made of pericardium, clots and scar tissue
with lack of myocardial elements, located most commonly in
the infero-posterior wall and they have a narrow neck in
contrast to true aneurysms which have all three layers of the
wall including myocardium and epicardium and is located
commonly in the antero-septal regions. Prompt identification
and surgical repair is important and is life-saving. Our patient
was a 56-year-old male diabetic who suffered an inferoposterior wall myocardial infarction associated with complete
heart block for which a permanent pacemaker implantation
was done three years back. He presented now with New York
Heart Association (NYHA) class II angina and evaluation
revealed moderate LV dysfunction (ejection fraction 38%),
moderate mitral regurgitation (MR), mild pulmonary arterial
hypertension (40 mmHg) with a large pseudoaneurysm with
a small neck in the posterior wall. A coronary angiogram was
done which showed severe triple vessel disease and left
ventriculogram identified a large thin-walled pseudoaneurysm
measuring 48 × 27 mm with a narrow neck on the posterior
wall. He was taken up for coronary artery bypass graft surgery
(CABG) with resection of the pseudoaneurysm. It was done
on-pump. Grafts were given to the left anterior
descending(LAD), ramus-intermedius, first diagonal and distal
right coronary artery (RCA). The wall of pseudoaneurysm was
incised and the defect in the ventricular wall was closed with a
Gore-Tex patch and the surrounding myocardial wall was used
to cover the patch. The post-operative period was uneventful
and with rehabilitation and concomitant medications he was
discharged on the 10, post-operative day, without anginal
symptoms. This report describes how a rare patient with
contained rupture of left ventricle, underwent successful
surgical repair and revascularization and emphasizes the
necessity for prompt surgical intervention to prevent
impending tamponade and mortality.
L.p65
560
The objective of this study was to scrutinize the technical
feasibility and advantages of total arterial revascularization
(TAR) in patients presenting for redo off-pump coronary artery
bypass grafting (OPCAB). From October 1999 to June 2005,
a total of 123 consecutive patients underwent redo OPCAB.
Amongst these patients, 90 (73.2%) had TAR. In only 33
patients, venous grafts were needed to supplement arterial
grafting. The average number of grafts per patient were 3.6
and the number of arterial grafts were 3.37 per patient. In the
year 2005, all redo OPCAB cases have had a TAR procedure.
There was zero conversion rate to ONCAB . The 30-day
mortality was 2.4%. The length of stay in intensive care unit
(ICU) was 3 days and length of stay in-hospital was 8 days
which is comparable with conventional first time coronary
artery bypass grafting (CABG). The wound infection rate was
comparable to that of first time OPCAB, i.e. 3.7%. None of the
patients had a cerebrovascular accident (0%), and 9 (7.5%)
patients had atrial fibrillation (AF) post-operatively. Renal
failure was detected in the ICU in one (0.8%) patient. In our
series, myocardial revascularization was complete and if
during revascularization, the patient became unstable
hemodynamically, then intra-aortic balloon pump (IABP) was
inserted in two (1.6%) patients. Redo TAR OPCAB is feasible
in almost all cases presenting for redo coronary bypass surgery
as the surgical experience of the team grows. High risk cases
benefit the most by this technique.
Post-Partum Acute Aortic Dissection
466
Pradyot Kumar Rath, Kamales Kumar Saha,
Mahesh Singh, Sunil Vanzara, S Bhagia, Umakanth Patil,
Ramakanta Panda
Acute aortic dissection is a life-threatening event. An
association between pregnancy and aortic dissection has been
reported. The “physiologic changes of pregnancy” accelerated
the development of pathologic changes in the arterial wall.
Patients with Marfan’s syndrome are more likely to be affected.
We present a case of non-Marfan female with pregnancyinduced hypertension who had acute aortic dissection within
two days of cesarian section for delivery of an intra uterine
growth retarded (IUGR) baby. It was a Type A (DeBakey Type
I) dissection with the intimal tear starting in the ascending
aorta and the dissection extending upto the infrarenal aorta.
She was taken up for emergent surgery and a valve-sparing
ascending aortic replacement with resuspension of aortic
valve was done. She had an uneventful recovery and was
11/24/2005, 11:19 AM
Indian Heart J 2005; 57: 555–561
discharged from hospital on the post-operative day 12. It can
be concluded that in acute aortic dissection, surgery can be
life-saving.
Randomized Trial of High versus Low-Dose
Atorvastatin for Reduction of Myocardial
Damage Following Coronary Artery Bypass
Graft Surgery
468
Mukesh K Sharma, Aditya Kapoor, SK Agarwal,
Satyendra Tewari, S Pandey, SK Singh, Sudeep Kumar,
N Garg, PK Goel, Nakul Sinha
Can Pre-Treatment with Statin Reduce
Myocardial Damage following Open Heart
Surgery
467
Mukesh K Sharma, SK Agarwal, Aditya Kapoor,
S Pandey, Satyendra Tewari, Sudeep Kumar, N Garg,
Sanjay Gandhi Post Graduate Institute of Medical Sciences,
Lucknow
Myocardial necrosis, assessed by enzymes (CPK-MB,
troponin-T) elevation, is relatively frequent after cardiac
surgery and is a marker of cardiac events. We conducted a
prospective study to analyze if pre-treatment with statin
therapy could have a bearing on enzyme release following open
heart surgery (OHS) and on events in post-operative course. A
total of 109 patients were included in the study [coronary
artery bypass graft (CABG), n=47; mechanical valve
replacement surgery, n=46; and surgery for intra-cardiac
shunt lesions, n=16]. The coronary artery disease (CAD)
patients were randomized into low statin (atorvastatin 10 mg)
arm or the high statin arm (atorvastatin 40 mg) started at least
≥ 1 week prior to surgery, while the rest of the patients were
randomized to 20 mg statin versus no statin. Enzyme
evaluation was done prior to surgery, 8 hours and 24 hours
following surgery. Of the total 109 patients, 52 received statin
while 57 received no statin. Mean age (40.89±17.63 years v.
42.6±18.8 years), gender distribution (male - female ratio
30:22 v. 32:15), type of surgery performed and basal enzymes
level were similar in both groups. Enzymatic release after open
heart surgery (OHS) was more in no-statin group versus statin
group.
Statin group
Basal
14.94±9.9
CPK MB (U)
8 hrs
32.88±23.45
24 hrs
Basal
32.8±23.4 0.030
No-statin group
14.13±10.33 58.74±25.62
51.3±23.9 0.029
Troponin T (ngm)
p
8 hrs
24 hrs
value
0.46±0.52 0.33±0.41 <0.01
0.92±2.6
561
CPK-MB (U)
Basal
8 hrs
High Statin
group
14.8±10.1
Low statin
group
13.3±1.33
24 hrs
Trop-T (ngm)
p value
Basal
8 hrs
24 hrs
28.39±17.18 25.09±19.86
0.031
0.24±0.36
0.21± 0.26
<0.01
51.62±4.95
0.029
0.407±0.472
0.33±0.45
<0.01
45.86±24.4
0.42±0.46 <0.01
Interestingly, statin pre-treatment prevented an enzyme
elevation at 24 hours following OHS in a significant proportion
of patients (17/52-33%) while the corresponding figure in
control patients was low (3/57 - 5%) (p <0.01). The mean ICU
stay (42.19±19.38 hours v. 57.42±38.05 hours), mean total
drainage (513±356.68 ml v. 566.9 ± 388.03 ml) and mean
total hospital stay (10.44 days v. 14.25 days) were much
shorter in those pre-treated with statin. We conclude that pretreatment with statin (≥1 week before OHS) is effective in
reducing myocardial damage with reduction in enzymatic
release and better in-hospital outcome after OHS.
L.p65
Myocardial necrosis, assessed by creatine kinase-MB (CKMB) or troponin elevation is relatively frequent after coronary
artery bypass grafting (CABG) and is considered a marker of
adverse events. Statins are known to have cardio-protective
effects. We sought to evaluate the efficacy of statin in
preventing the enzymatic release following surgery. Since it
was considered unethical to withhold statin therapy in any
patient of CAD, the patients were randomized into two groups
- those receiving 40 mg versus 10 mg atorvastatin started
atleast > 1 week prior to CABG. A total of 47 patients were
included in study - 23 were cases (pre-treated with 40 mg
atorvastatin) and 24 were control (pre-treated with 10 mg
atorvastatin). Both groups were matched for age (mean age
57.1 ± 10.63 years v. 57.2 ± 10.8 years); male-female ratio
17:6 v. 18:6). There was no significant difference in prior
history of myocardial infarction (MI) or acute coronary
syndrome (ACS) (10 v. 12 patients), left ventricular ejection
fraction (LVEF) (48.89 ± 12.67 % v. 51.39 ± 12.93), diabetes
mellitus (DM) (43% v. 41%), hypertension (HT) (41% v. 43%)
and smoking (17% v. 20%), total cholesterol, high-density
lipoprotein (HDL), low-density lipoprotein (LDL) and
triglycerides levels in both groups. Type of surgery (off-pump
v. on pump) and number of grafts were not statistically different
in both groups. Basal enzymes level was similar in both groups.
Enzymatic release after CABG was more in low statin group
versus high statin group.
Statin pre-treatment prevented an enzyme elevation at 24
hours following CABG in a significant proportion of patients
(14/23, 60%) while the corresponding figure in control
patients was lower (3/24, 12.5%) (p<0.01). The mean ICU stay
(46.24±18.38 v. 54.24 ± 24.99 hours), total drainage (615
± 223.7 v. 711.4 ± 469.9 ml) and mean total hospital stay
(11.14 v. 13.95 days) were much shorter in those pre-treated
with statin. We conclude that pre-treatment with statin (>1
week before CABG) is effective in reducing myocardial damage
with reduction in enzymatic release and better in-hospital
outcome in patients undergoing CABG.
11/24/2005, 11:19 AM
Indian Heart J 2005; 57: 562–564
562 Cardiovascular Drugs
Ezetimibe as an Adjunct to Atorvastatin in
Patients of Dyslipidemia
469
MS Gupta, Manish Singhal, Vijay Shanker,
RK Yadav, A Kaushal
Pt BD Sharma Post Graduate Institute of Medical Sciences, Rohtak
The incidence of more than half of coronary artery disease
(CAD) is attributable to lipid abnormalities. Despite established
efficacy, statins do not achieve recommended low-density
lipoprotein cholesterol (LDL-c) goals. Hence the need for
additional therapy. Our aim was, therefore, to evaluate the
safety and efficacy of ezetimibe (EZE) as an adjunct to
atorvastatin (ATV) in patients of dyslipidemia. We studied 80
patients with baseline LDL-c >130 mg/dl and triglyceride (TG)
≥150 mg/dl with no secondary cause of hypercholesterolemia.
These patients were randomly assigned to receive one of the
following regimens for 12 weeks: Group I received ATV 10 mg/
day, Group II ATV 20 mg/day; Group III ATV 10 mg/day plus
EZE 10 mg/day; Group IV placebo. After 12 weeks, EZE plus
ATV resulted in greater reduction in TG (56.4 v. 44% v. 30.4%
v. 0.04%), total cholesterol (46.7% v. 31.8% v. 37.74% v.
0.02%) and LDL-c (53.9% v. 34.6% v. 48.0% v. 0.02%)
compared to ATV 10 mg, ATV 20 mg and placebo, respectively
(p<0.05). Thus EZE plus ATV significantly reduced TG, LDL-c
and total cholesterol as compared to ATV 10 or 20 mg given
alone. No significant elevation in hepatic transaminases or
creatine-kinase were observed. No case of myopathy or
rhabdomyolysis were observed in any group during these 12
weeks of study. Co-administration of EZE with ATV offers a
well-tolerated and highly efficacious new treatment option for
patients of dyslipidemia and thus may help in prescribing low
dose ATV which may reduce side effects. However, this is a
preliminary report of the large ongoing trial.
Comparative Study of Three Lipid Lowering
Strategies in Indian Hyperlipidemic Subjects
470
Manoj Sharma, R Gupta, VT Shah, RB Panwar, MK Daga,
HS Hira, B Mohan, DR Sharma, A Chatterjee
given atorvastatin 10 mg and niancin 375 mg (n=115, 8
weeks) and Group 3 given atorvastatin 10 mg and ezetimibe
10 mg (n=17, 12 weeks). Various lipid parameters were
measured at baseline and at 4, 8 and 12 weeks of therapy.
Incidence of significant clinical and biochemical side-effects
was noted. Compared to baseline, at 12 weeks, total cholesterol
decreased in Group 1 from 233.9±27 to 174.9±27 mg/dl
(–59 mg/dl), in Group 2 from 244.2±32 mg/dl to 173.2±38
mg/dl (–71.0 mg/dl) and in Group 3 from 235.7±33 mg/dl to
167.9±20 mg/dl (–67.8mg/dl) (t test p<0.001); LDL-c
decreased in Group 1 from 153.4±22 mg/dl to 95.1±23 mg/
dl (–58.3mg/dl), in Group 2 from 164.4±27 mg/dl to
106.7±31 mg/dl (–27.7 mg/dl) and in Group 3 from
158.1±25 mg/dl to 90.8±16 mg/dl (–67.3 mg/dl) (p<0.001).
Triglycerides decreased in Group 1 from 171.1±72 mg/dl to
135.2±41 mg/dl (–35.9 mg/dl), in Group 2 from 156.3±57
mg/dl to 127.8±44 mg/dl (–28.5 mg/dl) and in Group 3 from
186.5±72 mg/dl to 133.3±37 mg/dl (–53.2 mg/dl) (p<0.01);
and Lp (a) decreased in Group 1 from 48.5±26 mg/dl to
26.9±19 mg/dl (–21.6 mg/dl), in Group 2 from 31.5±16 mg/
dl to 23.5±19 mg/dl (–8.0 mg/dl) and in Group 3 from
36.8±17 mg/dl to 36.5±17 mg/dl (–0.3 mg/dl). HDL-c
increased in Group 1 from 45.6±7 mg/dl to 53.3±9 mg/dl
(+8.3 mg/dl) in Group 2 from 45.7±8 mg/dl to 50.8±11 mg/
dl (+5.1 mg/dl) and in Group 3from 45.1±7 mg/dl to 49.5±11
mg/dl (+4.4 mg/dl). ApoA1/ApoB ratio increased in Group 1
from 0.96±0.7 mg/dl to 1.46±0.5 mg/dl (+5.1 mg/dl), in
Group 2 from 1.72±0.7 mg/dl to 2.93±1.9 mg/dl (+1.21 mg/
dl) and in Group 3 from 2.14±1.1 mg/dl to 2.72 ±1.6 mg/dl
(±0.58 mg/dl). Adverse reactions leading to withdrawal of
therapy were noted in 4 (3.1%) cases in Group 1, 2 (1.7%) in
Group 2 and 2 (1.7%) in Group 3. Minor side effects, nausea,
dyspepsia, tolerable flushing and myalgia were observed in 26
(19.8%), 18 (15.6%) and 5 (4.3%) cases, respectively. All the
three combinations significantly reduce LDL-c, TG and Lp(a)
but the greatest LDL reductions were observed with AE
combination. Niacin-containing combinations (LN, AN)
significantly increase HDL and ApoA1/ApoB ratio. A
polypharmaceutical approach with atorvastatin, ezetimibe
and niacin appears to be the most effective for Indian
dyslipidemic patients.
Monilek Hospital and Research Centre, Jaipur
To determine ideal lipid-lowering combination for Indian
dyslipidemic [high low-density lipoprotein cholesterol (LDLc), triglycerides (TG) and lipoprotein(a) and low high-density
lipoprtein cholesterol (HDL-c)] patients, we evaluated various
drug combinations, lovastatin-niacin (LN), atorvastatin-niacin
(AN) and atorvastatin-ezetimibe (AE). In a controlled singleblind parallel group multicentric study we recruited successive
consenting high-risk patients (> 2 major coronary risk factors)
with significant hyperlipidemia (LDL>130 mg/dl) meeting
prespecified inclusion and exclusion criteria. Group 1 was given
a combination pill of lovastatin 20 mg and extended release
niacin 375 mg (n=131, follow-up 12 weeks). Group 2 was
M.p65
562
Aspirin Resistance – Indian Perspective
Viji Samuel, Bobby John, Jacob Jose
471
Aspirin resistance, as quoted in the literature, varies widely,
from 5% to 40%. Indian data regarding this is scarce and
limited. In our study we attempted to profile the pattern of
aspirin response in a cohort of patients with chronic stable
coronary artery disease (CAD), compared to healthy controls.
The response variability in vascular risk subsets of CAD like
11/24/2005, 11:26 AM
Indian Heart J 2005; 57: 562–564
Cardiovascular Drugs 563
diabetes and hypertension was also assessed. In this prospective
study, we enrolled 63 consecutive patients with chronic stable
angina on regular aspirin therapy (75 mg) for a minimum
period of 7 days and 21 healthy controls not on aspirin. We
assayed the levels of 11- dehydro -thromboxane B2 in an early
morning urine specimen as a surrogate marker for assessing
aspirin response. The median values in healthy controls was
87.3 pg/mg (43.4 -143 pg/mg) and in the aspirin-treated
patients it was 60.8 pg/mg (16.7-943.0 pg/mg). When the
response was categorized as low, equal to high based on the
cut off values of 70% of the control values, no difference could
be demonstrated in the various vascular risk subsets such as
diabetes mellitus (p=0.218), hypertension (p=0.435), current
smokers (p=0.597) and hyperlipidemics (p=0.521). There is
a wide variability in response to aspirin with no significant
difference in response to aspirin in the various vascular
subgroups when compared to controls. Thus, aspirin
resistance in Indian population may not be a significant
contributor to adverse clinical outcomes if drug compliance
can be ensured.
Atorvastatin-Induced Polyneuropathy
SD Singh, Suraj Singh, S Mondal,
D Mukherjee
472
Regional Institute of Medical Sciences, Imphal and Institute of Post
Graduate Medical Education and Research & SSKM Hospital, Kolkata
Statins are commonly used and very well tolerated drugs.
They also have proven benefit in both primary and secondary
prevention of coronary heart disease (CAD). A case report of
a 53-year-old patient of CAD is presented here. He had
undergone coronary artery bypass grafting (CABG) for triple
vessel CAD, with associated atherosclerotic renal arterial
disease. The creatinine clearance level was 20 ml/min. He had
no symptoms of hyperlipidemia. The patient presented with
progressive numbness and tingling sensation of 3 months
duration in both hands. His medications included standard
treatment of ischemic heart disease and atorvastatin 20 mg
daily. The patient did not complain of muscle tenderness,
weakness or paralysis and had no difficulty in using his hands.
Electromyography (EMG) and nerve conductance velocity
(NCV) studies of upper limbs revealed a neuropathic process
affecting small caliber sensory nerve fibers. Three months after,
the therapy with atorvastatin was stopped, the numbness and
tingling resolved. The corresponding EMG and NCV studies
also reverted to normal. There is 4 to 14 fold increased risk for
idiopathic polyneuropathy with atorvastatin for which the
mechanims remains unclear.
M.p65
563
Dyslipidemia in Diabetics and Non- Diabetics:
473
A Comparative Study
Jayaraj C Sindhur, HG Ashoka, RK Bhat, Vittal Rao,
Girish Sonwalkar, Kiran Aithal, Indumati, S Kshama
SDM College of Medical Sciences and Hospital, Dharwad
Coronary heart disease is a leading cause of death world
wide. Atherosclerosis is responsible for almost all cases of
coronary heart disease especially in patients with diabetes and
hypertension. This is a cross sectional comparative study of
diabetics and non-diabetics comprising 150 patients in each
group. None of these patients were on any hypolipidemic
agents. Various parameters like age, sex, body mass index
(BMI), dietary habits, alcohol and tobacco use, blood sugar
levels, fasting lipid profile were studied and analyzed. Mean
age in cases was 52.94 years, and in controls 55.22 years;
mean fasting blood sugar in cases was 167 mg% and in
controls it was 96 mg%. Mean post-prandial blood sugar in
cases was 270 mg% and in controls, it was 125 mg%. BMI
was significantly higher in diabetics. Low-density lipoprotein
(LDL) and triglycerides (TGs) were significantly higher in
diabetics as compared to non-diabetics. High-density
lipoprotein (HDL) levels were significantly lower in diabetics.
Clinical Pattern of Real World Use of
Eptifibatide in 207 Consecutive Cases of
Gylcoprotein IIb/IIIa Antagonist Therapy
474
VT Shah, Vaibhav Chedda, V Kumarswamy,
Sanjay Porwal, Samir Shah, Amol Manerkar,
Dinesh Sangwan, Dhiren Shah
Jaslok Hospital and Metropolitan Heart Institute, Mumbai
Antithrombotic agents like glycoprotein (Gp) IIb/IIIa
antagonists are effective in acute ischemic syndromes as they
have shown to block >80% platelet aggregation. Eptifibatide
has shown significantly better results in acute coronary
syndrome (ACS), acute myocardial infarction (AMI) and
during percutaneous coronary intervention (PCI). However,
there are many “Real World” situations where urgent antithrombotic action is required, but such cases are not included
in trials. We analyzed the clinical pattern of the use of
eptifibatide in 207 consecutive cases out of 223 intended to
be given between January 2003 to July 2005. In 16 cases,
eptifibatide could not be given because of contraindications
like serum creatinine > 4 mg (7 cases) and thrombocytopenia
(platelet < 100000) in 9 malignancy cases. No other Gp IIb/
IIIa antagonist was used during the study period. Out of 207
cases, there were 172 (83.1%) males and 35 (16.9%) females
in the age group 21-80 years (median age 57 years). Their
risk factor profile were diabetes mellitus (DM): 83 (40%),
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Indian Heart J 2005; 57: 562–564
564 Cardiovascular Drugs
hypertension (HT): 75 (34.8%), high cholesterol (HC): 47
(22.7%), smoking: 37 (17.9%) and family history (FH) in 23
(11.1%). The drug was administered in: elective high risk
percutaneous transluminal coronary angioplasty (PTCA) 84
(40.5%), rescue PTCA: 22 (10.6%), unstable angina (UA)/nonQ MI: 43 ( 20.7%), post MI-UA: 29 (14%), acute MI: 12 (5.8%),
bailout during diagnostic angiography: 7 (3.3%) cases [(LM
bifurcation: 3, LM ostial: 2, post-coronary artery bypass
grafting (CABG): 2], bailout during routine PTCA 5 (2.4%)
cases (abrupt closure: 3, slow flow: 2), subacute thrombosis
(SAT) leading to acute MI in 5 cases (2.4%). All patients were
administered 2 boluses (180 µg/kg ) at 10 min interval,
alongwith 2 µg/kg/min infusion for maximum 96 hours.
Twelve cases received repeat drug during the same admission,
6 patients later during the study period, and 2 cases received
3 times during the entire study period. The drug was
discontinued in 5 cases, 3 groin hematomas and 2 gastrointestinal (GI) bleed requiring blood transfusions. Total of 176
patients underwent successful PTCA in which 316 stents were
implanted. CABG was done in 16 patients, 5 within 72 hours
and 11 after 72 hours, without any mortality. Remaining 15
patients underwent conservative medical management. A total
of 3 patients died, 1 cardiogenic shock with ancer stomach, 1
cardiogenic shock with anteroseptal myocardial infarction
(ASMI) following SAT , 1 post-CABG “No Option" CAD with
severe LV dysfunction. Minor self limiting side effects like gum
bleeding occurred in 46 (22.2%) cases, stool occult blood
positive in 36 (17.4%) cases and hematuria in 16 (7.7%) cases.
In conclusion, Gp IIb/IIIa antagonist eptifibatide can be used
in a broad spectrum of cases where urgent anti-thrombotic
action is required with excellent in-hospital results.
ischemia in patients with unstable angina. A total of 140
patients (male-female ratio 118 : 22) with non-Q myocardial
infarction (MI) who were not on any hypolipidemic drugs
previously were enrolled for the study. The baseline low-density
lipoprotein (LDL) was 114±8 mg/dl. They were randomly
assigned to receive either atorvastatin - 40 mg once daily or
atorvastatin -10 mg once daily. All the patients were assessed
for the occurrence of silent ischemia by 48 hours
electrocardiogram (ECG), monitoring after 3 weeks of therapy.
There was no significant difference in baseline characteristics
between the two groups. The results are presented in the table.
No.
Atorvastatin-40
70
Atorvastatin-10
70
* p<0.01; ** p<0.01
Silent ischemia
11*
40*
No ischemia
59
30**
We conclude that use of atorvastatin in high dose could reduce
the incidence of silent ischemia significantly as compared to
its low dose. This might improve the prognosis in patients of
silent ischemia.
Side Effect Profile of Trimetazidine
SD Singh, Bhimo Singh, B Majumdar, A Chowdhury
476
Regional Institute of Medical Sciences, Imphal, and
Institute of Post Graduate Medical Education and Research & SSKM
Hospital, Kolkota
Effect of High Dose Statin on Silent Ischemia
in Non-Q Myocardial Infarction
475
Debabrata Roy, Sachin Deba Singh, Indranil Dutta
Rabindra Nath Tagore International Institute of Cardiac Sciences,
Kolkata, Regional Institute of Medical Sciences, Imphal, and Institute
of Post Graduate Medical Education and Research, Kolkata
Silent ischemia in patients with acute coronary syndrome
confers on unfavorable outcome. The aim of the present study
was to assess whether endothelial protective effect of
atorvastatin in high dose can decrease the incidence of silent
M.p65
564
Trimetazidine is an increasingly used antianginal agent. We
followed 100 patients of ischemic heart disease with 35 mg
twice daily dose of trimetazidine for a period of 2 months.
Fourty (40%) patients were female. Mean age was 42±1.5
years (range 29-75 years). Side effects were seen in 5 (5%)
patients. Reported side effects were abdominal bloating
sensation (2.2% patients), insomnia (2.2% patients) and
diuresis (1.1% patients). All side effects were seen on initial
days (2-5 days) of therapy, except for diuresis, which was seen
within hours of starting thearpy. In this patient, who was also
suffering from compensated alcoholic liver cirrhosis and who
was not taking other drugs at that time, the drug had to be
withdrawn. In all other patients, the drug was continued and
tolerance to side effects occurred. Thus, we conclude that it is
relatively safe drug, with one interesting side effect of diuresis
which was not previously reported.
11/24/2005, 11:26 AM
Indian Heart J 2005; 57: 565–593
Radial Artery Size in Adult Indians
K Jani, A Ranjan, N Tanwar, SM Shah, R Pothiwala,
N Vayada, H Malhotra, S Shah, T Patel
Miscellaneous 565
477
Transradial (TR) approach to percutaneous coronary
procedures is an attractive alternative to transfemoral route.
Initial apprehension about feasibility of this route in short
stature Asian population was unfounded. Large studies from
Japan and India have proved TR approach to be as effective as
transfemoral route in all subsets of coronary procedures and
at all ages. The most important prerequisite to TR procedure is
a normal Allen’s test. The radial artery accommodates routine
sheath and catheters in these patients. However, radial artery
size is not well documented in Indian population. We measured
radial artery size by ultrasound using 3-11 mega Hz transducer
probe (L11-3) and HP Sonos 5500 machine. Bilateral radial
artery diameter (intima to intima inner luminal diameter),
height, body surface area (BSA) and gender of the patient were
recorded and analyzed. We analyzed the data to correlate the
radial artery size with gender, height and BSA of patients. A
total of 1000 patients (772 men; 77.2 %) were examined. The
average size of right radial artery in men was 2.37±0.45 mm
and in women it was 2.19±0.33 mm. The average size of left
radial artery in men was 2.38±0.42 mm and in women it was
2.10±0.38 mm. Over 85% of men and >90% of women had
radial artery size > 1.7 mm. The sizes of radial arteries were
similar irrespective of height and BSA of patients. To conclude,
the average radial artery sizes are not different in either men
or women. In adult Indian population, it showed no correlation
either with height, gender or BSA of patients.
Thrombolytic Therapy in Pulmonary
Embolism
478
Rajeev Bhardwaj, Arvind Kandoria, Arvind Sood
Indira Gandhi Medical College, Shimla
Pulmonary embolism (PE) is a common emergency with
high mortality rate if it remains untreated. Patients who have
right ventricular (RV) dysfunction fare poorly. We studied the
effect of thrombolytic therapy (TLT) in this population. Fifteen
consecutive patients of angiographically proved PE were given
24 hours infusion of streptokinase (STK), one lac U/hour after
a bolus of 2.5 lac U. Mean duration of symptoms was
15.4±18.79 days. Mean age was 40.33±16.78 years; 8 were
males and 7 were females. Mean systolic pulmonary artery
pressure (PAP) was 79.33±18.55 mmHg. Nine patients had
complete recanalizition on repeat angiography, 2 had partial
recanalization and 3 had no effect of TLT. One patient died
N.p65
565
during the therapy. Two patients required therapy for 48 hours,
one was given urokinase after failure with STK, and responded.
Two patients came with recurrent PE. In conclusion, TLT is
effective in majority of patients of PE with RV dysfunction, with
majortiy of patients showing improvement in PAP and RV
dysfunction. Some patients may require extended infusion of
TLT.
Atherosclerotic Risk Factors in Chronic
Kidney Disease
479
Jijith Krishnan, SV Praveen, TN Sunil Roy,
Vikram Sankar, N Jayaprasad, Johnson Francis, Muneer,
Sreelatha, K Venugopal
Renal insufficiency has been shown to be a significant and
independent risk factor for accelerated atherosclerosis.
Cardiovascular disease is the leading cause of premature death
in more than 50% of renal failure patients. Renal dysfunction
causes a rapid enlargement of pre-existing plaques rather than
mediating de novo generation of plaques. The aim of the study
was to analyze the atherosclerotic risk factors in patients with
non-diabetic chronic renal disease. This study included 31
patients with establised chronic renal disease without diabetes,
infectious or inflammatory disease and not on renal
replacement therapy. Sociodemographic parameters,
nutritional parameters, renal failure indices, and
cardiovascular risk factors like fasting lipids, lipoprotein(a), Creactive protein (CRP), serum fibrinogen, homocysteine, and
left ventricular hypertrophy (LVH) were analyzed. Mean age
of the population was 47 years (range: 18-85 years), males
87% and females 13%. Mean serum creatinine level was 6.6
mg/dl; 58% were smokers and 87% had hypertension. LVH by
electrocardiogram (ECG) was present in 45.2% and mean LV
mass index was 242.57 gm. Mean total cholesterol was 176.97
mg%, mean low-density lipoprotein (LDL) 104.5 mg%, mean
high-density-lipoprotein (HDL) 41.6 mg%, mean triglyceride
146.32 mg% and mean lipoprotein(a) 27.9 mg%. Mean CRP
level was 29.28 mg% (0.8-181 mg%), values >10 mg% were
found in 61.2% of patients. Serum fibrinogen level >350 mg/
dl was found in 32.25% and <350 mg/dl in 67.75% (mean
value: 302.87 mg/dl). Mean serum homocysteine was 11.6
µmol/L. Homocysteine >10 µmol/L was found in 45.16%.
Results of the study indicated that patients with chronic kidney
disease have elevated levels of inflammatory markers in the
blood, which predisposes these subjects to greater
cardiovascular risk. This study shows that inflammation plays
an important role in accelerated atherosclerosis and is perhaps
more important than abnormal lipid profile in patients with
chronic renal disease.
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566 Miscellaneous
Cardiovascular Involvement in Leptospirosis
480
AS Muhammed Fassaludeen, Vikram Sankar,
N Jayaprasad, SV Praveen, Mubarak, Babu Vasudev,
Kader Muneer, CG Sajeev, Vinayakumar, Johnson Francis,
CC Velayudhan, K Venugopal
Cardiovascular involvement in leptospirosis is common.It
is also characterized by abnormalities in hypotension and
electrocardiogram (ECG). The usual ECG abnormalities are
conduction disturbances, T wave changes and atrial
fibrillation. Myocarditis and pericarditis are also described but
are relatively rare. All patients with leptospirosis who were
admitted from February 2002 to October 2002 were studied
in our institution. Diagnosis of leptospirosis was made using
WHO criteria and serological tests. Cardiovascular
involvement was assessed by clinical examination, ECG, X-ray
and Doppler echocardiographic examination. Out of 200
patients (125 males, 75 females) with leptospirosis, 20 (10%)
had atrial fibrillation,30 (15%) had cardiomegaly with
prominent upper pulmonary veins on chest X-ray. ECG
changes occurred in 150 (75%), with sinus tachycardia being
most common abnormality. First degree atrioventricular block
occurred in 30% and bundle branch blocks occurred in 8
patients. Twenty percent patients had transient ST elevation.
On echocardiography, wall motion abnormality was observed
in 50 patients of which 40 (20%) had left ventricular (LV)
dysfunction. Forty patients died at one month of follow-up, all
of them had renal dysfunction and only 5 had LV dysfunction.
To conclude, cardiovascular involvement is common in
patients with leptospirosis. LV dysfunction is common but not
a major predictor of mortality.
Measurement of C-Reactive Protein from
Filter Paper-Dried Blood Spots
C-reactive protein (CRP) is one of the acute phase proteins
synthesized in the liver and is normally present as a trace
constituent of serum/plasma. More than a dozen populationbased studies have demonstrated increased CRP level as an
independent risk factor for future cardiovascular disease. Use
of dried blood for the population-based screening has
advantages of ease of collection, transportation, minimal
invasiveness and small volume. Blood spot assay of CRP would
be of use in epidemiological studies. In this study, a high
sensitive immunoassay for quantitation of CRP in blood spots
dried on filter paper (Whatmann no.3) was standardized by
using a commercially available immunoassay kit. Analysis was
carried out on 4.5 mm diameter discs punched out from bloodbased CRP standard and test samples. The extraction time
566
Chylopericardium and its Management:
Role of Nuclear Scintigraphy
482
Naushad, Bagirath, Sanjay Mehrotra, Pradeep Shetty,
Abijit, Ravi Kishore
Narayana Hrudayalaya, Bangalore
Chylous pericardial effusion is an uncommon condition and
the treatment is difficult. We report two cases of chylous
pericardial effusion. First case presented with a tamponade in
a 22-year-old male, and in a second case as asymptomatic
cardiac enlargement. Lymphoscintigraphy confirmed the
communication between the lymphatic trunk and pericardial
space in both the cases. The first case was managed surgically
and the second one was managed conservatively. This
demonstrates spectrum of presentations and the extremes of
management strategies.
481
R Quraishi, R Lakshmy, D Prabhakaran, M Irshad,
AK Mukhopadhaya, BL Jailkhani
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carried out was 3 hours as compared to the other overnight
extraction procedures described earlier. The detection limit of
the dried blood assay was 0.005 mg/L with mean inter- and
mean intra-assay coefficient of variance correlating well with
the serum/ plasma assay. The linearity of the assay was studied
by serially diluting a known concentration of purified CRP
quality control supplied commercially with washed red blood
corpuscles (RBCs) and spotted on filter paper. The observed
mean value of the recovery of low and high control sample
was 98%. We conclude that the extraction and quantitation
of CRP from dried blood on filter paper is quicker and simpler
as compared to the presently available methods. This method
can be used to monitor CRP level in epidemiological studies.
N-Acetylcysteine Prevents Contrast-Induced
Nephropathy after Elective and Urgent
Coronary Angiography and Intervention
483
LR Nath, PK Rustagi, JC Mohan
Metro Heart Institute, Jaipur Golden Hospital, New Delhi
Several studies have utilized low-dose regimens of Nacetylcysteine (NAC) for 48 hours to prevent contrast-induced
nephropathy (CIN) after cardiac catheterization (cath) and
percutaneous coronary intervention (PCI). A lengthy pretreatment period with NAC may not be feasible in urgent
situations. The purpose of this study was to assess the efficacy
of an abbreviated, higher dose regimen of NAC for the
prevention of CIN after elective and urgent coronary
angiography (cath) and/or percutaneous coronary
intervention (PCI). We prospectively evaluated 48 (36 male,
12 female) patients referred for elective or urgent cath and/or
PCI with stable chronic renal insufficiency (creatinine
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Indian Heart J 2005; 57: 565–593
clearance <50 cc/min). Sixteen (33%) patients were diabetic.
Mean creatinine level was 2.08 mg/dl and 15 patients had
creatinine level 3.0 mg/dl. Patients were randomized as: 25
patients to NAC 1000 mg 1 hour before cath/PCI and 4 hours
later, and 23 patients to placebo. All patients received hydration
(0.9% saline) before and after cath/PCI (minimum total volume
≥1500 ml). CIN was defined as an increase of serum creatinine
≥0.5 mg/dl or ≥25% 48 hours after cath/PCI. CIN occurred in
3/25 (11%) patients of the NAC group versus 8/23 (33%) in
the placebo group. Serum creatinine remained stable in the
NAC group after cath/PCI (2.08±0.56 mg/dl v. 2.12±0.81 mg/
dl; p = NS), but increased after cath/PCI in the placebo group
(2.08±0.53 mg/dl v. 2.32±0.74 mg/dl; p < 0.01). An
abbreviated, higher dose regimen of NAC prevents the rise of
serum creatinine 48 hours after cath/PCI, and may prevent
CIN after cath/PCI.
Role of N-Acetylcysteine in Preventing
484
Contrast-Induced Nephropathy due to
Exposure to Conventional High Osmolar Ionic
Contrast in Patients with Normal Baseline
Renal Function
RPS Bhardwaj, Mohd Ahmad, Ramesh Thakur,
CM Varma, J Rajagopal, Gagandeep Singh, Subrat Akhoury
There is conflicting evidence regarding efficacy of nacetylcysteine (NAC) in preventing contrast-induced
nephropathy (CIN). There is great paucity of data with regard
to efficacy with ionic contrast which is commonly used in our
set-up. This study compared the incidence of CIN in patients
undergoing diagnostic angiography (coronary and noncoronary) with 76% urograffin, randomized to receive NAC
and placebo. During study period of June 2004 to March 2005,
152 patients undergoing angiography were randomized to
receive either NAC 600 mg twice daily 4 doses or placebo
starting 12 hours before procedure. Patients with baseline
creatinine level >1.4 mg/dl were excluded. Adequate hydration
was ensured in both the groups. Blood urea, serum creatinine
and creatinine clearance were calculated at baseline, 24 hours
and 48 hours after the procedure. CIN was defined as an
increase in serum creatinine of 25% of baseline or an absolute
increase of 0.5 mg/dl above baseline. There were 76 patients
each in NAC and placebo groups. Male-female ratio was 3:1.
The average dose of contrast used was 85 ml. The mean
creatinine level changed from baseline of 1.1±0.35 to 1.2±0.8
in NAC group versus rise from 1.05±0.4 to 1.6±0.8 in patients
with placebo at 48 hours. The incidence of CIN was 3.9% (3/
76) in NAC group versus 15.78% (12/76) in placebo group
which was statistically significant. NAC has definite role in
prevention of CIN with use of ionic contrast even in low risk
patients.
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Miscellaneous 567
New Born Venous Cord Blood and Maternal
Lipoprotein Status in Uncomplicated
Pregnancies
485
Sudhir Varma, Monica Varma, Harpreet Singh,
Vivek Sharma, Neeraj Goyal, Prabhjot Kaur,
Monika Singh, Amarbir Singh, Upendra Kaul
Sadbhavna Medical and Heart Institute, Patiala
Maternal lipids during pregnancy have been extensively
studied. However, their impact on fetal lipids in uncomplicated
pregnancy needs to be further evaluated. In this ongoing study,
the lipid abnormalities in pregnancy and its correlation with
lipid profile of new born was evaluated. Maternal lipid profile
at term (n=40, age 24±5 years) also compared with agematched non-pregnant female controls (n=34, age 26±6
years). Maternal and venous cord blood samples were studied
for total cholesterol (TC), low-density lipoprotein (LDL), highdensity lipoprotein (HDL), very low-density lipoprotein (VLDL)
and triglyceride. All these parameters were significantly higher
in pregnant subjects as compared to controls (p<0.01). The
maternal lipids in the range of TC ≥200 mg% and triglycerides
≥ 175 mg% are significantly more frequently associated with
newborn TC and triglyceride levels ≥ 100 mg%. These reference
values are potentially pertinent for understanding atherogenic
state during pregnancy and offspring’s future cardiovascular
health. Maternal and new born cord blood status of
lipoproteins in uncomplicated pregnancies is shown in the
table.
Parameter
Maternal (n=40)
(mg%, mean ±SD )
Newborn cord blood
(n=40) (mg%, mean±SD)
Total cholesterol
HDL
LDL
VLDL
Triglyceride
221±49
54±9
125±27
41±7
203±37
93±14
30±2
46±13
23±16
88±24
HDL: high-density lipoprotein; LDL: low-density lipoprotein; VLDL:
very low-density lipoprotein
Radio-femoral Delay: A Classical Sign
Revisited
486
A Bahl, KKN Namboodiri, HK Bali, M Rohit, YP Sharma,
R Vijayvergiya, A Grover, KK Talwar
Chandigarh
The aim of this study was to elucidate the mechanisms of
radio-femoral delay in patients with coarctation of aorta and
interrupted aortic arch. Five patients of coarctation of aorta,
interrupted aortic arch and 6 control subjects were included
in the study. Combined electrocardiographic (ECG) and pulsed
Doppler recordings were used to measure flow signal onset
time, acceleration time, R to peak time and acceleration slope
in radial and femoral arteries. Mean and standard deviations
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568 Miscellaneous
of the percentage differences in the time durations recorded
in the femoral and radial arteries were calculated in control
subjects. In test subjects, the difference was considered
significant if it differred from those of control subjects by
mean+2 SD. The mean (SD) percentage difference between the
flow signal onset times of the femoral artery and radial arteries
in control subjects was 6.7 (9.1) milliseconds. This parameter
was significantly increased in the femoral artery only in the
patients with severe coarctation and Type A interrupted aortic
arch. The mean (SD) percentage difference between the
acceleration time and R to peak time of the femoral artery and
radial artery in control subjects was 15 (10.8) and 4 (2.8)
milliseconds, respectively. Both these parameters were
significantly increased in femoral artery in all 5 patients. To
conclude, radio-femoral delay is due to increased antegrade
flow time and lag in peaking of the femoral pulse in patients
with small gradients. In patients with large gradients and
Type 1 interrupted aortic arch, late arrival of the pulse wave
in the femoral artery also contributes to radio-femoral delay.
Right Ventricular Hypertension in a Case of
Isolated Left Pulmonary Artery Stenosis
487
B Bandyopadhyay, J Naik, A Chatterjee, D Das
Kolkata
A 13-year-old girl child presented with mild shortness of
breath. She was a well grown girl with normal development
and intelligence. She was not syndromic. Karyotyping was
normal female. Connective tissue disorders and Takayasu’s
disease were ruled out. There was no cyanosis, heart sounds
were normal and there was a soft systolic murmur in upper
left sternal border. There was bilaterally equal breath sounds.
Electrocardiogram (ECG) showed normal sinus rhythm and
chest X-ray showed bilateral equal pulmonary vascularity.
Echocardiography showed diffuse narrowing of the left
pulmonary artery (LPA) with mild flow acceleration. The right
pulmonary artery was of normal size (13 mm near the first
branching). A ventilation/perfusion scan was done which
showed diffuse photopenia in the left lung. The right lung had
good perfusion. She was taken up for angiography with an idea
to stent the LPA. The right ventricle pressure was noted to be
at two-third of systemic level. Angiogram in the shallow and
steep LAO /CR view showed diffuse long segment stenosis of
the main portion of the LPA along with stenosis of the lower
lobe branch. Initially we balloon-dilated the lower lobe branch
with a 8×4 Tyshak-2 balloon which showed a beaded
appearance and signified that it was diseased. So initially the
main portion of the LPA was stented with a 12×27 mm Palmaz
stent and through that stent the lower lobe branch was stented
with a 7×18 Genesis stent. Following this, the right ventricular
(RV) pressure came down to less than one-third of systemic
level. Post-procedure angiogram showed well opened up LPA
along with its lower lobe branch and there was good perfusion
N.p65
568
to the left lung. Isolated branch pulmonary artery stenosis can
cause significant RV hypertension and it is worth relieving
those obstructions.
Hyperhomocysteinemia, Hyperleptinemia
and Increased Procoagulant Activity in
Insulin-Resistant Subjects
488
RA Karatela, GS Sainani
Insulin resistance syndrome (IRS), which contributes
significantly to the pathogenesis of coronary heart disease
(CHD), has been brought in sharp focus. This is due to increased
predisposition of Asian Indians and ethnic Indians to develop
CHD due to their typical obesity phenotype [i.e. higher
percentage of body fat at a lower value of body mass index
(BMI)] and abnormal metabolic profile. The objective was to
determine if the novel risk factors for coronary artery disease
(CAD) like high plasma levels of homocysteine, leptin (a
hormone derived from adipocytes), coagulation factor VII
(FVII, proconvertin) and lipid tetrad index (LTI) were also
present in the middle-aged IRS subjects. We determined plasma
levels of homocysteine, leptin, FVII, fibrinogen, lipid profile,
fasting, post-prandial blood glucose, insulin, BMI, waist-hip
ratio for the IRS subjects (n=45) and the age- and sex-matched
controls (n=45). We found significantly elevated LTI
(16483.97±1242 v. 9618.1±1712, p<0.0001) and
homocysteine levels in IRS subjects compared to controls
(18.94± 0.9 v. 12.3±0.4 µmol/L, p<0.001). Hemostatic
factors such as FVII and fibrinogen were also found
significantly elevated in the IRS group compared to controls
(p<0.01). Furthermore, elevated plasma leptin levels
(36.61±2.9 v. 17.3±1.3 ng/ml in males, 49.47±3.1 v.
32.1±3.2 ng/ml in females, p<0.01) were observed in the IRS
group when compared to the controls, with higher levels in
females. Hyperinsulinemia was observed in the IRS group. The
calculated values of HOMA-IR (Homeostasis Model
Assessment), a marker of insulin resistance, were significantly
higher in the IRS (p<0.001). However, only plasma leptin
correlated with serum insulin levels (r=0.46, p<0.001) and
insulin resistance values (r=0.31, p<0.02). To conclude, the
novel CHD risk factors like hyperhomocysteinemia,
hyperleptinemia and increased FVII coagulant activity are also
associated with IRS, and thus, may help in evaluating CHD
predisposition in this subset of patients.
Tilt Table Testing in Patients Presenting with
489
Syncope
MP Girish, Manish Sharma, Mohit D Gupta, R Batra,
BB Bharti, P Nandakishore, V Trehan, S Tyagi
Various tests used for the diagnosis of syncope include
electrocardiography (ECG), echocardiography, tilt table testing,
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Miscellaneous 569
stress tests, cardiac catheterization, Holter recording,
implantable loop recorders and electrophysiological testing.
The most common cause of syncope is neurocardiogenic, for
which only head up tilt table testing seems to be the most
promising diagnostic modality. We report experience from our
institute of tilt table testing in patients presenting with syncope.
Tilt table testing was done in the early morning after a fasting
of 6 hours, in two stages; Stage 1 – lasting for a period of 40
min, at an inclination of 70° and Stage 2– lasting 15 min after
administration of sublingual nitroglycerine (400 µg) in 70°
inclined position. Out of 140 consecutive patients, 77 (55%)
had a negative test and 63 (45%) patients had a positive test.
Among the patients who had negative test 43 (68.1%) were
males and 20 (31.8%) were females. The mean age of males
was 50.41±15.72 years, the mean age of females was
41.41±10.89 years. Among the patients with a positive test,
30 (38.8%) were males and 47 (61.2%) were females. The
mean age of males was 53.57±13.31 years and the mean age
of females was 34.44±16.31 years. Among the patients who
had positive test, 51 (66.2%) had mixed cardioinhibitory and
vasodepressor response, 13 (16.8%) each had isolated
cardioinhibitory or vasodepressor response. Tilt table testing
was more often positive in young females. Among men there
was no significant age difference between patients who had
positive or negative test on tilt table testing. We conclude that
in patients presenting with syncope, a tilt table testing would
be beneficial.
High Altitude Pulmonary Hypertension
FMH Ahmad
490
Army Hospital, 56 APO
High altitude pulmonary hypertension is an extremely rare
entity seen after prolonged stay at high altitudes, first reported
from the higher reaches of Ladakh. A 27-year-old medical
officer was admitted at a hospital located at 3100 m in Ladakh
after a stay of 140 days at height >20,000 feet, with history
of recently aggravated breathlessness on exertion NYHA class
III, episodic (L) sided chest pain, palpitations and dry cough of
20 days duration. There was no swelling of feet. The patient
had undergone a medical examination including
electrocardiogram (ECG) prior to induction. On examination,
he was an averagely built individual, with pulse: 98 beats/min
regular, blood pressure (BP) 136/92 mmHg; no cyanosis,
edema, or raised jugular venous pressure (JVP). Systemically
he had a loud P 2 with right ventricular (RV) heave and
epigastric pulsations. Investigation revealed hemoglobin 16
gm/dl, normal hemogram and biochemical profile. ECG
revealed deep arrow-headed T wave inversion in precordial
leads, V1-V3 and cardiomegaly on chest X-ray. Patient was
treated with rest and descent to the planes. After 8 weeks, he
was asymptomatic. ECG and chest X-ray had reverted to
normal. Echocardiography was reported normal. This rarely
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seen condition is an illustration of interaction between man
and an environment of hypobaric hypoxia.
Usefulness of Quick Bedside Test of
Erythrocyte Mean Cellular Volume and its
Relationship between Serum Homocysteine
in Ischemic Heart Disease
491
Nitin M Kulkarni, Jagdish S Hiremath, MI Hasan, TS Pol
Poona Hospital and Research Center, Pune
Decrease in serum homocysteine levels decreases the rate
of restenosis and the need for revascularization of the target
lesion after coronary angioplasty. Cobalamin (B12) and folate
deficiency is related to both increased erythrocyte mean
cellular volume (MCV) and raised serum total homocysteine
(tHcy) values. Studies show that serum B12 and folate values
do not exactly represent the tissue status of the two vitamins.
Therefore, a direct relationship between MCV and tHcy,
supports the hypothesis that tHcy is a better indicator for tissue
vitamin status than the serum levels of B12 and folate. We
studied the correlation between MCV, and tHcy values in 104
patients in the age group of 20 to 77 years with mean age of
50.2+13.1years. There were 81 (77.9%) males and 23
(22.1%) females. MCV values ranged from 72 to 110 fl with
mean of 90.81 fl + 13.50 fl and tHcy values from 6 to 78
µmol with mean of 23.9 + 7.1 µmol/L. Our study showed
younger age and high MCV levels independently predicted high
tHcy (β = - 0.20, p =0.037 and β = + 0.78 , p=0.001) after
controlling for the gender in patients with cardiovascular
disease. A simple inexpensive test of MCV (using computerized
cell counter analysis) can be a useful indicator of high levels
of tHcy (expensive test) which can be performed only in
selected patients.
Use of Sodium Bicarbonate and N-Acetyl
Cystiene in Patients with High Serum
Creatinine undergoing Invasive Procedure
492
Nilesh Gautam, Sudhir Vaishnav, Suniel Karande,
Tilak Suvarna
Contrast-induced nephropathy is a common complication
following invasive procedures in patients with compromised
renal functions. We conducted this study to examine the
efficacy of sodium bicarbonate (NaHCO3) as prophylaxis for
contrast-induced nephropathy in high-risk patients. Contrastinduced nephropathy was defined as an increase of 25% or
more in serum creatinine the next day after contrast injection.
We report our experience in 43 consecutive patients who
underwent invasive procedures with an initially raised serum
creatinine and an increased risk of contrast-induced
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570 Miscellaneous
nephropathy from July 2004 to June 2005. All patients were
hydrated with 3 ml/kg NaHCO3 one hour before invasive
procedures, followed by 1 ml/kg for 6 hours post-procedure.
All patients were given N-acetylcystiene 600 mg twice a day
for 2 days. Non-ionic contrast, iopamidol was used in all
patients. Average amount of dye used in these patients was
64.86 ml±8.23 ml. Of the 43 patients, 55.81% (n=24)
underwent coronary angiography (CAG) alone, 16.27% (n=7)
underwent CAG+percutaneous transluminal renal
angioplasty (PTRA), 27.9% (n=12) underwent CAG+
percutaneous transluminal coronary angioplasty (PTCA) and
6.97% (n=3) underwent CAG+PTRA+PTCA. Pre- and postprocedure serum creatinine were compared in all patients. Preprocedure serum creatinine was 1.76±0.26 mg% and post
procedure (24=hour) serum creatinine was 1.48±0.17 mg%.
Of the 43 patients 44.18% (n=19) showed no difference in pre
and post-procedure serum creatinine, 60.46% (n=26) showed
reducing trend and 0.46% (n=2) showed an increasing trend
in pre- and post-procedure serum creatinine (rise was not >
25%). No patient went into renal shut down or required
dialysis. The results suggest that hydration with NaHCO3 is
efficacious, safe and inexpensive way for preventing contrastinduced nephropathy.
Do Electrocardiography Characteristics
Predict Variability in QT Measurements in
Clinical Trials?
493
Sheetal Shetty, Mehvesh Khan, Sugam Salvi, Dilip Karnad,
Snehal Kothari, Dhiraj Narula, Yash Lokhandwala
Quintiles ECG Services, Mumbai
Drug regulatory authorities require new drugs to be
evaluated for drug-induced QT prolongation, which can cause
Torsades de pointes. To enhance precision of measurements,
it is recommended that all elecrocardiograms (ECGs) be read
manually at a central core lab by a few skilled readers. Some
ECGs are difficult to be read even by skilled readers leading to
considerable inter-reader and intra-reader variability. To
identify ECG characteristics which make QT interval
measurements difficult, 100 digitized ECGs were randomly
selected from a database. Twenty-four experienced readers
measured the RR and QT intervals using digital onscreen
calipers with precision of 2 ms. Each reader read all ECGs a
second time in random sequence. Values from the first reader
were used to determine inter-reader variability and the
difference between the first and second reader for intra-reader
variability. As the next step, 25 ECGs with the largest and 25
with the least inter-reader variability were identified. They were
then analyzed for characteristics which made them difficult
to read. The standard deviation of the QT measurements made
by 25 readers for each ECG reflects the inter-reader variability
for that ECG. This value in the 25 ECGs with least variability
ranged from 4.6 to 7.3 ms and from 10.5 to 32 ms in the 25
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ECGs with largest variability. The following features were seen
more frequently in ECG that had a large variability: noisy
baseline (13 v. 5), flat/low voltage T waves (7 v. 3), inverted T
waves, biphasic T (3 v. 0). In conclusion, presence of flat T
waves, biphasic T waves and noisy baseline make QT
measurement difficult.
An Algorithm for Diagnosis of Acute
Pulmonary Thromboembolism
494
Jain T Kallarakkal, M Ramesh, M Jayarajah, JSN Murthy,
Ashamoorthy, S Thanikachalam
Sri Ramachandra Deemed University, Chennai
The aim of the study was to device a simple and practical
algorithm applicable for the diagnosis of acute pulmonary
thromboembolism (PTE). We did a retrospective analysis of 30
patients of proven acute PTE who presented with acute
dyspnea. The diagnosis was confirmed by spiral computerized
tomographic (CT) pulmonary angiography. All the patients
presenting with acute dyspnea had analysis of D-dimer, room
air ABG, ECG and bedside echocardiography. Out of 30 patients
with proven acute PTE by spiral CT pulmonary angiogram
from January 2004 to December 2004, 28 patients had Ddimer >500 ng/ml (93%). Twenty patients had resting inferior
wall and anteroseptal changes (66%). All 30 patients had room
air PaO2 <70 mmHg (100%) and bedside echocardiography
findings of right ventricular (RV) strain were observed in 18
patients (60%). Only 2 patients with D-dimer >500 ng/ml had
no acute PTE. To conclude, the combination of elevated Ddimer, PaO 2 <70mmHg, ECG changes and RV strain in
echocardiography are highly sensitive tests to diagnose acute
PTE. We therefore present the algorithm for diagnosis of acute
PTE.
Acute Dyspnea
Clear Lung Fields
ECG
Hemodynamically
ECG
Unstable
Adventitious Sounds
Hemodynamically
Stable
ECHO, D-Dimer, ABG
ABG at room
D-dimer
AIR
Abnormal
Normal
High
Normal
Excludes PE
Treat
Abnormal
Echo
Normal
Echo
Excludes PE
Spiral Pulmonary Angio
11/24/2005, 11:28 AM
Excludes PE
Indian Heart J 2005; 57: 565–593
Myocarditis in Celphos Poisoning as
Evidenced by CPK-MB Levels and
Electrocardiographic Changes
Miscellaneous 571
495
A Lalchandani, A Agarwal, SK Saxena, V Agarwal,
P Sondhi, M Shameen, P Neelam
Celphos poisoning is a common mode of suicidal poisoning
in India and associated with high mortality rates. Myocarditis
is an important factor in mortality due to celphos poisoning.
This study was conducted to determine whether CPK-MB levels
and electrocardiographic (ECG) changes can predict the
outcome and its prognostic significance in patients with
celphos poisoning. The study included 23 patients of celphos
poisoning admitted to emergency wards of our hospital. All
patients were examined for serum CPK-MB levels and 12-lead
ECG at admission in addition to other routine investigations.
78.2% of patients (n=18) had elevated CPK-MB levels at
admission and either ST-T changes or ventricular arrhythmias
in ECG. Of these patients, 16 (69.5%) expired, only 2 being
discharged in healthy condition (p<0.05). Majority of patients
with normal CPK-MB group were discharged in healthy
condition (80%). Patients of celphos poisoning with elevated
CPK-MB levels on admission had poorer prognosis compared
to those with normal levels. CPK-MB levels thus carry
prognostic value in such patients. High CPK-MB levels also
indicate that celphos poisoning is a cause of myocarditis in
India.
Vegetation Negative Infective Endocarditis
S Venkatesan, G Gnanavelu, G Karthikeyan,
V Jaganathan, R Alagesan, M Annamalai,
S Shanmugasundaram, S Geetha, A Balaguru, G Anuradha
496
The definitive diagnosis of infective endocartitis (IE) remains
a contentious clinical issue. Many diagnostic criteria have been
advanced. However, none has withstood the test of time.
Currently Duke's criteria is considered as de facto standard.
Documentation of vegetation within the cardiac chambers and
positivity of blood culture is the sine qua non of IE and evidently
they constitute the major criteria. Ironically, according to
Duke's criteria, IE could still be diagnosed in the absence of
vegetation, provided it fulfils other major criteria of culture
positivity. In this context, we report our analysis of patients
with IE without vegetation. Out of 24 patients admitted
between 2004-2005 in our hospital with the diagnosis of IE,
4 patients failed to show vegetations. All had rheumatic heart
disease (RHD) and presented with prolonged fever. All had
severe eccentric mitral regurigitation (MR). One had severe
aortic regurgitation (AR) also. One had flail posterior mitral
leaflet (PML). All had blood culture positive - 3 for
staphylococcus auerus 1 for pseudomonas. None had
vegetations on the first echocardiographic examination.
Transesophageal echcardiography (TEE) also failed to detect a
N.p65
571
vegetation or abscess. The diagnosis of IE was made on the
basis of Duke's criteria (1 major and 3 minor features).
Treatment was started based on culture positivity and
sensitivity. All patients underwent serial echocardiography
every week for 6 weeks. New mobile vegetation was detected
in 1 patient in anterior mitral leaflet (AML) measuring 12 mm
after 2 weeks. Three patients never showed any evidence of
vegetation. One patient developed cerebral vasculitis and
another renal insufficiency during the course of treatment.
Two patients stabilized with medical management. One expired
and other had refractory cardiac failure and was referred for
emergency surgery. The mechanism of absence of vegetation
in IE could be varied. Simple temporal dissociation between
appearance of vegetation and the clinical syndrome should
be the first possibility. Further, vigorous antimicrobial
treatment might have prevented the formation of vegetation.
But, as we have seen in few patients, it never appeared. This
was possibly due to layered vegetation like that of a thrombus
on the surface of the valve or adjacent myocardium. The
process of vegetation formation need not be endoluminal, it
can burrough into the tissue plane intramurally without
projecting into the cavity. Spontaneous rupture of chordae
secondary to inflammation without any vegetation is another
possibility. We conclude that even though vegetations are
considered sine quo non of IE in many clinical situations, IE
occurs without vegetation. The mechanisms could be varied.
Prevalence of Chronic Kidney Disease in
Patients with Coronary Artery Disease
Referred for Cardiac Catheterization
497
LR Nath, JC Mohan
Metro Golden Heart Institute, Jaipur Golden Hospital, New Delhi
Chronic kidney disease (CKD) has serious impact on clinical
outcome after percutaneous coronary intervention (PCI) and
surgical revascularization in patients with coronary artery
disease (CAD). Little data are available regarding prevalence
of CKD in the Indian population with CAD referred for invasive
procedures. The study was designed to estimate the frequency
of CKD in patients with CAD who were referred to a tertiary
care centre with cardiac catheterization facilities. 1102
consecutive patients with definite CAD and complete
datasheet (male: 858 and females: 244; mean age 58±7 years;
22% >70 years of age) who underwent coronary angiography
or percutaneous coronary intervention (PCI) between January
2002 and May 2005 were analyzed retrospectively.The
baseline clinical data regarding age, sex ,diabetes status,
hemoglobin and serum creatinine were examined. CKD was
defined as glomerular filtration rate (GFR) < 60 ml/min/ 1.73
m2 calculated by using MDRD equation as suggested by the
National Kidney Foundat

Cardiological Society of India

Transcription

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